Search Results
For Shaft Diameter For Shaft Diameter |
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For Motion Type For Motion Type |
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| Oscillating | Rotary |
Seal ID Seal ID |
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For Use With For Use With |
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Seat OD Seat OD |
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Manufacturer/Brand Equivalent Manufacturer/BrandEquivalent |
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Seal OD Seal OD |
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Seat Material Seat Material |
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Spring Material Spring Material |
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Seal Width Seal Width |
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Seat Width Seat Width |
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Case Material Case Material |
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Diaphragm Material Diaphragm Material |
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Gasket Material Gasket Material |
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Seat ID Seat ID |
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Washer Material Washer Material |
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Maximum Speed for Oscillating Motion Maximum Speed forOscillating Motion |
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Diaphragm Hardness Diaphragm Hardness |
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Mechanical Pump Shaft Seals with Extended Spring
For use in waste water, boiler feed, and compressor pumps, these seals have an extra-long spring that accommodates variations in seal cavity length. They come furnished as two pieces—the seal and the seat. The seal is comprised of the case, spring, diaphragm, and washer, which come locked together as one piece. The seat is comprised of the seat and the gasket.
Buna-N diaphragms and gaskets resist grease and a wide range of oils.
Viton® fluoroelastomer diaphragms and gaskets resist a wider range of chemicals than Buna-N.
EPDM diaphragms are more resistant to water and steam than Buna-N and Viton® fluoroelastomer, but aren’t as resistant to oils and chemicals.
Carbon washers are for use with clean liquids.
Silicon carbide washers have a hard surface that resists scratching, so they can be used with liquids that contain abrasives.
Note: Maximum performance values cannot be achieved simultaneously; for example, speed is affected by pressure, temperature, and other operating conditions.
For technical drawings and 3-D models, click on a part number.
Inch
Seal | Seat | Material | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| For Shaft Dia. | Trade Number | Manufacturer/ Brand Equivalent | ID | OD | Wd. | ID | OD | Wd. | Washer | Seat | Max. Pressure, psi | Each | |
304 Stainless Steel Case and Spring with Buna-N Rubber Diaphragm and Gasket | |||||||||||||
| 1/2" | 1012, 392, 401A | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 0.500" | 0.930" | 0.750" | 0.500" | 0.934" | 0.237" | Carbon | Ceramic | 400 | 00000000 | 000000 |
| 1/2" | 168 | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 0.500" | 0.917" | 0.812" | 0.500" | 1.000" | 0.312" | Carbon | Ceramic | 250 | 0000000 | 00000 |
| 1/2" | 631 | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 0.500" | 0.917" | 0.812" | 0.500" | 1.000" | 0.312" | Phenolic Plastic | Ceramic | 250 | 0000000 | 00000 |
| 5/8" | 274 | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 0.625" | 1.185" | 1.312" | 0.625" | 1.250" | 0.406" | Carbon | Ceramic | 250 | 00000000 | 00000 |
| 5/8" | 290 | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 0.625" | 1.185" | 0.875" | 0.625" | 1.250" | 0.406" | Carbon | Ceramic | 250 | 00000000 | 00000 |
| 5/8" | 359 | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 0.625" | 1.177" | 0.875" | 0.625" | 1.250" | 0.406" | Carbon | Ceramic | 250 | 00000000 | 00000 |
| 5/8" | 508 | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 0.625" | 1.185" | 0.875" | 0.625" | 1.250" | 0.406" | Carbon | Ceramic | 250 | 00000000 | 00000 |
| 5/8" | 800 | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 0.625" | 1.100" | 1.312" | 0.625" | 1.148" | 0.312" | Carbon | Ceramic | 250 | 00000000 | 00000 |
| 3/4" | 107165 | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 0.750" | 1.302" | 0.687" | 0.750" | 1.287" | 0.252" | Carbon | Ceramic | 250 | 00000000 | 00000 |
| 3/4" | 358, 750 | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 0.750" | 1.302" | 0.875" | 0.750" | 1.375" | 0.406" | Carbon | Ceramic | 250 | 00000000 | 00000 |
| 7/8" | 309, 703 | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 0.875" | 1.429" | 0.937" | 0.875" | 1.500" | 0.406" | Carbon | Ceramic | 250 | 00000000 | 00000 |
| 1" | 235 | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 1.000" | 1.552" | 1.000" | 1.000" | 1.625" | 0.437" | Carbon | Ceramic | 250 | 00000000 | 00000 |
| 1 1/8" | 356 | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 1.125" | 1.750" | 1.062" | 1.125" | 1.750" | 0.437" | Carbon | Ceramic | 250 | 00000000 | 00000 |
| 1 1/4" | 185 | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 1.250" | 1.875" | 1.062" | 1.250" | 1.875" | 0.437" | Carbon | Ceramic | 250 | 00000000 | 00000 |
| 1 1/4" | 381 | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 1.250" | 1.875" | 1.062" | 1.250" | 1.875" | 0.437" | Carbon | Ceramic | 250 | 00000000 | 00000 |
| 1 1/4" | 466 | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 1.250" | 1.875" | 1.062" | 1.250" | 2.000" | 0.437" | Carbon | Ceramic | 250 | 00000000 | 00000 |
| 1 1/4" | 756 | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 1.250" | 1.875" | 1.062" | 1.250" | 1.875" | 0.437" | Carbon | Iron/Nickel Blend | 250 | 00000000 | 00000 |
| 1 1/4" | 976, 978 | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 1.250" | 1.875" | 1.062" | 1.250" | 1.768" | 0.367" | Carbon | Ceramic | 250 | 00000000 | 00000 |
| 1 3/8" | 177 | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 1.375" | 2.000" | 1.125" | 1.375" | 2.000" | 0.437" | Carbon | Ceramic | 250 | 00000000 | 00000 |
| 1 1/2" | 758 | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 1.500" | 2.125" | 1.125" | 1.500" | 2.125" | 0.437" | Carbon | Ceramic | 250 | 00000000 | 00000 |
| 1 5/8" | 238 | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 1.625" | 2.422" | 1.375" | 1.625" | 2.375" | 0.500" | Carbon | Ceramic | 250 | 00000000 | 00000 |
| 1 3/4" | 237, 446 | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 1.750" | 2.500" | 1.344" | 1.750" | 2.500" | 0.500" | Carbon | Ceramic | 250 | 00000000 | 00000 |
| 1 7/8" | 340 | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 1.875" | 2.514" | 1.500" | 1.875" | 2.625" | 0.500" | Carbon | Ceramic | 250 | 00000000 | 00000 |
| 2" | 267 | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 2.000" | 2.625" | 1.500" | 2.000" | 2.750" | 0.500" | Carbon | Ceramic | 250 | 00000000 | 00000 |
304 Stainless Steel Case and Spring with Viton® Fluoroelastomer Rubber Diaphragm and Gasket | |||||||||||||
| 1/2" | 168V | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 0.500" | 0.917" | 0.812" | 0.500" | 1.000" | 0.312" | Carbon | Ceramic | 250 | 0000000 | 00000 |
| 5/8" | 359V | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 0.625" | 1.185" | 0.875" | 0.625" | 1.250" | 0.406" | Carbon | Ceramic | 250 | 0000000 | 00000 |
| 5/8" | 359VSC | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 0.625" | 1.185" | 0.875" | 0.625" | 1.250" | 0.406" | Silicon Carbide | Silicon Carbide | 250 | 00000000 | 00000 |
| 3/4" | 358V, 750V | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 0.750" | 1.302" | 0.875" | 0.750" | 1.375" | 0.406" | Carbon | Ceramic | 250 | 00000000 | 00000 |
| 3/4" | 877 | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 0.750" | 1.300" | 0.812" | 0.750" | 1.375" | 0.406" | Carbon | Ceramic | 250 | 0000000 | 00000 |
| 7/8" | 703V | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 0.875" | 1.429" | 0.937" | 0.875" | 1.500" | 0.406" | Carbon | Ceramic | 250 | 0000000 | 00000 |
| 1" | 235V | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 1.000" | 1.552" | 1.000" | 1.000" | 1.625" | 0.437" | Carbon | Ceramic | 250 | 0000000 | 00000 |
| 1" | 245 | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 1.000" | 1.552" | 1.000" | 1.000" | 1.625" | 0.437" | Carbon | Ceramic | 150 | 00000000 | 00000 |
| 1 1/8" | 356V | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 1.125" | 1.750" | 1.062" | 1.125" | 1.750" | 0.437" | Carbon | Ceramic | 250 | 0000000 | 00000 |
| 1 1/8" | 356VSC | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 1.125" | 1.750" | 1.062" | 1.125" | 1.750" | 0.437" | Silicon Carbide | Silicon Carbide | 250 | 00000000 | 00000 |
| 1 1/4" | 185V | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 1.250" | 1.875" | 1.062" | 1.250" | 1.875" | 0.437" | Carbon | Ceramic | 250 | 00000000 | 00000 |
| 1 3/8" | 177V, 491V | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 1.375" | 2.000" | 1.125" | 1.375" | 2.000" | 0.437" | Carbon | Ceramic | 250 | 0000000 | 00000 |
| 1 1/2" | 11558 | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 1.500" | 2.124" | 1.093" | 1.500" | 2.125" | 0.437" | Carbon | Ceramic | 250 | 0000000 | 00000 |
| 1 1/2" | 758V | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 1.500" | 2.124" | 1.125" | 1.500" | 2.125" | 0.437" | Carbon | Ceramic | 250 | 0000000 | 00000 |
| 1 5/8" | 238V | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 1.625" | 2.375" | 1.375" | 1.625" | 2.375" | 0.500" | Carbon | Ceramic | 250 | 0000000 | 00000 |
| 1 3/4" | 237V | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 1.750" | 2.375" | 1.375" | 1.750" | 2.500" | 0.500" | Carbon | Ceramic | 250 | 000000 | 00000 |
| 1 7/8" | 340V | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 1.875" | 2.515" | 1.500" | 1.875" | 2.625" | 0.500" | Carbon | Ceramic | 250 | 0000000 | 00000 |
| 2" | 267V | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 2.000" | 2.625" | 1.500" | 2.000" | 2.750" | 0.500" | Carbon | Ceramic | 250 | 0000000 | 00000 |
304 Stainless Steel Case and Spring with EPDM Rubber Diaphragm and Gasket | |||||||||||||
| 1/2" | 168E | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 0.500" | 0.917" | 0.812" | 0.500" | 1.000" | 0.312" | Carbon | Ceramic | 250 | 00000000 | 00000 |
| 5/8" | 359E | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 0.625" | 1.177" | 0.875" | 0.625" | 1.250" | 0.406" | Carbon | Ceramic | 250 | 00000000 | 00000 |
| 3/4" | 358E | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 0.750" | 1.302" | 0.875" | 0.750" | 1.375" | 0.406" | Carbon | Ceramic | 250 | 0000000 | 00000 |
| 7/8" | 703E | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 0.875" | 1.422" | 0.937" | 0.875" | 1.500" | 0.406" | Carbon | Ceramic | 250 | 00000000 | 00000 |
| 1" | 235E | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 1.000" | 1.552" | 1.000" | 1.000" | 1.625" | 0.437" | Carbon | Ceramic | 250 | 00000000 | 00000 |
| 1 1/8" | 356E | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 1.125" | 1.750" | 1.062" | 1.125" | 1.750" | 0.437" | Carbon | Ceramic | 250 | 00000000 | 00000 |
| 1 1/4" | 185E | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 1.250" | 1.875" | 1.062" | 1.250" | 1.875" | 0.437" | Carbon | Ceramic | 250 | 00000000 | 00000 |
| 1 3/8" | 177E | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 1.375" | 2.000" | 1.125" | 1.375" | 2.000" | 0.437" | Carbon | Ceramic | 250 | 00000000 | 00000 |
| 1 1/2" | 758E | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 1.500" | 2.125" | 1.125" | 1.500" | 2.125" | 0.437" | Carbon | Ceramic | 250 | 00000000 | 00000 |
| 1 5/8" | 238E | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 1.625" | 2.422" | 1.375" | 1.625" | 2.375" | 0.500" | Carbon | Ceramic | 250 | 00000000 | 00000 |
| 1 3/4" | 237E | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 1.750" | 2.444" | 1.375" | 1.750" | 2.500" | 0.500" | Carbon | Ceramic | 250 | 00000000 | 00000 |
| 1 7/8" | 340E | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 1.875" | 2.514" | 1.500" | 1.875" | 2.625" | 0.500" | Carbon | Ceramic | 250 | 00000000 | 00000 |
| 2" | 267E | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 2.000" | 2.724" | 1.500" | 2.000" | 2.750" | 0.500" | Carbon | Ceramic | 250 | 00000000 | 000000 |
Metric
Seal | Seat | Material | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| For Shaft Dia., mm | Manufacturer/ Brand Equivalent | ID, mm | OD, mm | Wd., mm | ID, mm | OD, mm | Wd., mm | Washer | Seat | Max. Pressure, psi | Each | |
304 Stainless Steel Case and Spring with Buna-N Rubber Diaphragm and Gasket | ||||||||||||
| 12 | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 12.000 | 23.250 | 20.500 | 12.000 | 25.500 | 8.000 | Carbon | Ceramic | 250 | 00000000 | 000000 |
| 13 | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 13.000 | 23.250 | 20.500 | 13.000 | 25.500 | 8.000 | Carbon | Ceramic | 250 | 00000000 | 00000 |
| 14 | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 14.000 | 27.000 | 22.250 | 14.000 | 31.750 | 10.250 | Carbon | Ceramic | 250 | 00000000 | 00000 |
| 15 | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 15.000 | 30.000 | 22.250 | 15.000 | 31.750 | 10.250 | Carbon | Ceramic | 250 | 00000000 | 00000 |
| 16 | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 16.000 | 27.000 | 22.250 | 16.000 | 31.750 | 10.250 | Carbon | Ceramic | 250 | 00000000 | 00000 |
| 17 | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 17.000 | 30.750 | 22.250 | 17.000 | 35.000 | 10.250 | Carbon | Ceramic | 250 | 00000000 | 00000 |
| 18 | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 18.000 | 30.750 | 22.250 | 18.000 | 35.000 | 10.250 | Carbon | Ceramic | 250 | 00000000 | 00000 |
| 20 | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 20.000 | 33.500 | 23.750 | 20.000 | 38.000 | 10.250 | Carbon | Ceramic | 250 | 0000000 | 00000 |
| 22 | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 22.000 | 33.500 | 23.750 | 22.000 | 38.000 | 10.250 | Carbon | Ceramic | 250 | 00000000 | 00000 |
| 24 | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 24.000 | 39.250 | 25.500 | 24.000 | 41.250 | 11.000 | Carbon | Ceramic | 250 | 00000000 | 00000 |
| 25 | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 25.000 | 39.250 | 25.500 | 25.000 | 41.250 | 11.000 | Carbon | Ceramic | 250 | 00000000 | 00000 |
| 28 | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 28.000 | 45.500 | 27.000 | 28.000 | 44.500 | 11.000 | Carbon | Ceramic | 250 | 00000000 | 00000 |
| 30 | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 30.000 | 47.500 | 27.000 | 30.000 | 47.750 | 11.000 | Carbon | Ceramic | 250 | 00000000 | 00000 |
| 32 | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 32.000 | 47.500 | 27.000 | 32.000 | 47.750 | 11.000 | Carbon | Ceramic | 250 | 00000000 | 00000 |
| 33 | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 33.000 | 52.000 | 28.500 | 33.000 | 50.750 | 11.000 | Carbon | Ceramic | 250 | 00000000 | 00000 |
| 35 | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 35.000 | 52.000 | 28.500 | 35.000 | 50.750 | 11.000 | Carbon | Ceramic | 250 | 00000000 | 00000 |
| 40 | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 40.000 | 59.250 | 35.000 | 40.000 | 60.250 | 12.750 | Carbon | Ceramic | 250 | 00000000 | 00000 |
| 42 | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 42.000 | 65.000 | 35.000 | 42.000 | 63.500 | 12.750 | Carbon | Ceramic | 250 | 00000000 | 00000 |
| 44 | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 44.000 | 62.000 | 35.000 | 44.000 | 63.500 | 12.750 | Carbon | Ceramic | 250 | 00000000 | 00000 |
| 45 | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 45.000 | 65.000 | 38.000 | 45.000 | 63.500 | 12.750 | Carbon | Ceramic | 250 | 00000000 | 00000 |
| 50 | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 50.000 | 71.000 | 38.000 | 50.000 | 69.750 | 12.750 | Carbon | Ceramic | 250 | 00000000 | 000000 |
304 Stainless Steel Case and Spring with Viton® Fluoroelastomer Rubber Diaphragm and Gasket | ||||||||||||
| 12 | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 12.000 | 23.250 | 20.500 | 12.000 | 25.500 | 8.000 | Carbon | Ceramic | 250 | 00000000 | 00000 |
| 13 | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 13.000 | 23.250 | 20.500 | 13.000 | 25.500 | 8.000 | Carbon | Ceramic | 250 | 00000000 | 00000 |
| 14 | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 14.000 | 27.000 | 22.250 | 14.000 | 31.750 | 10.250 | Carbon | Ceramic | 250 | 00000000 | 00000 |
| 15 | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 15.000 | 30.000 | 22.250 | 15.000 | 31.750 | 10.250 | Carbon | Ceramic | 250 | 00000000 | 00000 |
| 16 | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 16.000 | 27.000 | 22.250 | 16.000 | 31.750 | 10.250 | Carbon | Ceramic | 250 | 00000000 | 00000 |
| 17 | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 17.000 | 30.750 | 22.250 | 17.000 | 35.000 | 10.250 | Carbon | Ceramic | 250 | 00000000 | 00000 |
| 18 | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 18.000 | 30.750 | 22.250 | 18.000 | 35.000 | 10.250 | Carbon | Ceramic | 250 | 00000000 | 00000 |
| 20 | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 20.000 | 33.500 | 23.750 | 20.000 | 38.000 | 10.250 | Carbon | Ceramic | 250 | 00000000 | 00000 |
| 22 | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 22.000 | 33.500 | 23.750 | 22.000 | 38.000 | 10.250 | Carbon | Ceramic | 250 | 00000000 | 00000 |
| 24 | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 24.000 | 39.250 | 25.500 | 24.000 | 41.250 | 11.000 | Carbon | Ceramic | 250 | 00000000 | 00000 |
| 25 | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 25.000 | 39.250 | 25.500 | 25.000 | 41.250 | 11.000 | Carbon | Ceramic | 250 | 00000000 | 00000 |
| 28 | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 28.000 | 45.500 | 27.000 | 28.000 | 44.500 | 11.000 | Carbon | Ceramic | 250 | 00000000 | 00000 |
| 30 | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 30.000 | 47.500 | 27.000 | 30.000 | 47.750 | 11.000 | Carbon | Ceramic | 250 | 00000000 | 00000 |
| 32 | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 32.000 | 47.500 | 27.000 | 32.000 | 47.750 | 11.000 | Carbon | Ceramic | 250 | 0000000 | 00000 |
| 33 | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 33.000 | 52.000 | 28.500 | 33.000 | 50.750 | 11.000 | Carbon | Ceramic | 250 | 00000000 | 00000 |
| 35 | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 35.000 | 52.000 | 28.500 | 35.000 | 50.750 | 11.000 | Carbon | Ceramic | 250 | 0000000 | 00000 |
| 40 | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 40.000 | 59.250 | 35.000 | 40.000 | 60.250 | 12.750 | Carbon | Ceramic | 250 | 00000000 | 00000 |
| 42 | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 42.000 | 65.000 | 35.000 | 42.000 | 63.500 | 12.750 | Carbon | Ceramic | 250 | 00000000 | 00000 |
| 44 | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 44.000 | 62.000 | 35.000 | 44.000 | 63.500 | 12.750 | Carbon | Ceramic | 250 | 0000000 | 000000 |
| 45 | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 45.000 | 65.000 | 38.000 | 45.000 | 63.500 | 12.750 | Carbon | Ceramic | 250 | 00000000 | 000000 |
| 50 | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 50.000 | 71.000 | 38.000 | 50.000 | 69.750 | 12.750 | Carbon | Ceramic | 250 | 00000000 | 000000 |
304 Stainless Steel Case and Spring with EPDM Rubber Diaphragm and Gasket | ||||||||||||
| 12 | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 12.000 | 23.250 | 20.500 | 12.000 | 25.500 | 8.000 | Carbon | Ceramic | 250 | 00000000 | 00000 |
| 13 | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 13.000 | 23.250 | 20.500 | 13.000 | 25.500 | 8.000 | Carbon | Ceramic | 250 | 00000000 | 00000 |
| 14 | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 14.000 | 27.000 | 22.250 | 14.000 | 31.750 | 10.250 | Carbon | Ceramic | 250 | 00000000 | 00000 |
| 15 | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 15.000 | 30.000 | 22.250 | 15.000 | 31.750 | 10.250 | Carbon | Ceramic | 250 | 00000000 | 00000 |
| 16 | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 16.000 | 27.000 | 22.250 | 16.000 | 31.750 | 10.250 | Carbon | Ceramic | 250 | 00000000 | 00000 |
| 17 | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 17.000 | 30.750 | 22.250 | 17.000 | 35.000 | 10.250 | Carbon | Ceramic | 250 | 00000000 | 00000 |
| 18 | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 18.000 | 30.750 | 22.250 | 18.000 | 35.000 | 10.250 | Carbon | Ceramic | 250 | 00000000 | 00000 |
| 20 | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 20.000 | 33.500 | 23.750 | 20.000 | 38.000 | 10.250 | Carbon | Ceramic | 250 | 00000000 | 00000 |
| 22 | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 22.000 | 33.500 | 23.750 | 22.000 | 38.000 | 10.250 | Carbon | Ceramic | 250 | 00000000 | 00000 |
| 24 | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 24.000 | 39.250 | 25.500 | 24.000 | 41.250 | 11.000 | Carbon | Ceramic | 250 | 00000000 | 00000 |
| 25 | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 25.000 | 39.250 | 25.500 | 25.000 | 41.250 | 11.000 | Carbon | Ceramic | 250 | 00000000 | 00000 |
| 28 | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 28.000 | 45.500 | 27.000 | 28.000 | 44.500 | 11.000 | Carbon | Ceramic | 250 | 00000000 | 00000 |
| 30 | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 30.000 | 47.500 | 27.000 | 30.000 | 47.750 | 11.000 | Carbon | Ceramic | 250 | 00000000 | 00000 |
| 32 | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 32.000 | 47.500 | 27.000 | 32.000 | 47.750 | 11.000 | Carbon | Ceramic | 250 | 00000000 | 00000 |
| 33 | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 33.000 | 52.000 | 28.500 | 33.000 | 50.750 | 11.000 | Carbon | Ceramic | 250 | 00000000 | 00000 |
| 35 | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 35.000 | 52.000 | 28.500 | 35.000 | 50.750 | 11.000 | Carbon | Ceramic | 250 | 00000000 | 00000 |
| 40 | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 40.000 | 59.250 | 35.000 | 40.000 | 60.250 | 12.750 | Carbon | Ceramic | 250 | 00000000 | 00000 |
| 42 | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 42.000 | 65.000 | 35.000 | 42.000 | 63.500 | 12.750 | Carbon | Ceramic | 250 | 00000000 | 00000 |
| 44 | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 44.000 | 62.000 | 35.000 | 44.000 | 63.500 | 12.750 | Carbon | Ceramic | 250 | 000000 | 00000 |
| 45 | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 45.000 | 65.000 | 38.000 | 45.000 | 63.500 | 12.750 | Carbon | Ceramic | 250 | 00000000 | 00000 |
| 50 | John Crane Type 21 Pac-Seal Type 21 Pac-Seal Type 31 Sealol Type 43 CE Short Sealol Type 43 CU Short | 50.000 | 71.000 | 38.000 | 50.000 | 69.750 | 12.750 | Carbon | Ceramic | 250 | 00000000 | 000000 |
Narrow-Profile Mechanical Pump
Shaft Seals with Extended Spring
Designed to fit in housing bores that meet ANSI and DIN 24960, these seals have an extended spring that accommodates variations in seal cavity length. They're used in waste water, boiler feed, and compressor pumps. Seals come furnished as two pieces—the seal and the seat. The seal is comprised of the case, spring, diaphragm, and washer, which come locked together as one piece. The seat is comprised of the seat and the gasket.
Note: Maximum performance values cannot be achieved simultaneously; for example, speed is affected by pressure, temperature, and other operating conditions.
For technical drawings and 3-D models, click on a part number.
Seal | Seat | Material | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| For Shaft Dia. | Trade Number | Manufacturer/ Brand Equivalent | ID | OD | Wd. | ID | OD | Wd. | Washer | Seat | Max. Pressure, psi | Specifications Met | Each | |
316 Stainless Steel Case and Spring with Buna-N Rubber Diaphragm and Gasket | ||||||||||||||
| 3/4" | 275 | John Crane Type 1 Pac-Seal Type 51 Sealol Type 43 CE Long | 0.750" | 1.199" | 1.312" | 0.750" | 1.375" | 0.406" | Carbon | Ceramic | 250 | ANSI 24960, DIN 24960 | 00000000 | 000000 |
| 7/8" | 188 | John Crane Type 1 Pac-Seal Type 51 Sealol Type 43 CE Long | 0.875" | 1.324" | 1.375" | 0.875" | 1.500" | 0.406" | Carbon | Ceramic | 250 | ANSI 24960, DIN 24960 | 00000000 | 00000 |
| 1" | 754 | John Crane Type 1 Pac-Seal Type 51 Sealol Type 43 CE Long | 1.000" | 1.449" | 1.562" | 1.000" | 1.625" | 0.437" | Carbon | Ceramic | 250 | ANSI 24960, DIN 24960 | 00000000 | 00000 |
| 1 1/8" | 204 | John Crane Type 1 Pac-Seal Type 51 Sealol Type 43 CE Long | 1.125" | 1.562" | 1.625" | 1.125" | 1.750" | 0.437" | Carbon | Ceramic | 250 | ANSI 24960, DIN 24960 | 00000000 | 00000 |
| 1 1/4" | 361 | John Crane Type 1 Pac-Seal Type 51 Sealol Type 43 CE Long | 1.250" | 1.687" | 1.625" | 1.250" | 1.875" | 0.437" | Carbon | Ceramic | 250 | ANSI 24960, DIN 24960 | 00000000 | 00000 |
| 1 3/8" | 354 | John Crane Type 1 Pac-Seal Type 51 Sealol Type 43 CE Long | 1.375" | 1.820" | 1.687" | 1.375" | 2.000" | 0.437" | Carbon | Ceramic | 250 | ANSI 24960, DIN 24960 | 00000000 | 00000 |
| 1 1/2" | 305 | John Crane Type 1 Pac-Seal Type 51 Sealol Type 43 CE Long | 1.500" | 1.949" | 1.687" | 1.500" | 2.125" | 0.437" | Carbon | Ceramic | 250 | ANSI 24960, DIN 24960 | 00000000 | 00000 |
| 1 5/8" | 745 | John Crane Type 1 Pac-Seal Type 51 Sealol Type 43 CE Long | 1.625" | 2.125" | 2.000" | 1.625" | 2.375" | 0.500" | Carbon | Ceramic | 250 | ANSI 24960, DIN 24960 | 00000000 | 00000 |
| 1 3/4" | 205 | John Crane Type 1 Pac-Seal Type 51 Sealol Type 43 CE Long | 1.750" | 2.300" | 2.000" | 1.750" | 2.500" | 0.500" | Carbon | Ceramic | 250 | ANSI 24960, DIN 24960 | 00000000 | 00000 |
| 1 7/8" | 523 | John Crane Type 1 Pac-Seal Type 51 Sealol Type 43 CE Long | 1.875" | 2.437" | 2.125" | 1.875" | 2.625" | 0.500" | Carbon | Ceramic | 250 | ANSI 24960, DIN 24960 | 00000000 | 00000 |
Mechanical Pump Shaft Seals
Commonly used in well, sump, and displacement pumps, these seals have a two-piece spring-loaded design that keeps the sealing surfaces in contact as the material wears. Seals come furnished as two pieces—the seal and the seat. The seal is comprised of the case, spring, diaphragm, and washer, which come locked together as one piece. The seat is comprised of the seat and the gasket.
Buna-N diaphragms and gaskets resist grease and a wide range of oils.
Viton® fluoroelastomer diaphragms and gaskets resist a wider range of chemicals than Buna-N.
Note: Maximum performance values cannot be achieved simultaneously; for example, speed is affected by pressure, temperature, and other operating conditions.
For technical drawings and 3-D models, click on a part number.
Seal | Seat | Material | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| For Shaft Dia. | Trade Number | Manufacturer/ Brand Equivalent | ID | OD | Wd. | ID | OD | Wd. | Washer | Seat | Max. Pressure, psi | Each | |
304 Stainless Steel Case and Spring with Buna-N Rubber Diaphragm and Gasket | |||||||||||||
| 3/8" | 511 | John Crane Type 6 Pac-Seal Type 16 Sealol Type 60L | 0.375" | 0.917" | 0.625" | 0.375" | 0.875" | 0.218" | Phenolic Plastic | Iron/Nickel Blend | 150 | 00000000 | 000000 |
| 1/2" | 162 | John Crane Type 6 Pac-Seal Type 16 Sealol Type 60L | 0.500" | 0.917" | 0.656" | 0.500" | 1.000" | 0.312" | Phenolic Plastic | Ceramic | 150 | 00000000 | 00000 |
| 5/8" | 100 | John Crane Type 6 Pac-Seal Type 16 Sealol Type 60L | 0.625" | 1.185" | 0.718" | 0.625" | 1.187" | 0.343" | Phenolic Plastic | Ceramic | 150 | 00000000 | 0000 |
| 5/8" | 501 | John Crane Type 6 Pac-Seal Type 16 Sealol Type 60L | 0.625" | 1.185" | 0.812" | 0.625" | 1.250" | 0.406" | Phenolic Plastic | Ceramic | 150 | 00000000 | 00000 |
| 5/8" | 680 | John Crane Type 6 Pac-Seal Type 16 Sealol Type 60L | 0.625" | 1.185" | 0.718" | 0.625" | 1.187" | 0.281" | Carbon | Ceramic | 150 | 00000000 | 00000 |
| 3/4" | 101 | John Crane Type 6 Pac-Seal Type 16 Sealol Type 60L | 0.750" | 1.300" | 0.812" | 0.750" | 1.437" | 0.406" | Phenolic Plastic | Ceramic | 150 | 00000000 | 0000 |
| 3/4" | 851 | John Crane Type 6 Pac-Seal Type 16 Sealol Type 60L | 0.750" | 1.312" | 0.718" | 0.750" | 1.375" | 0.406" | Carbon | Ceramic | 150 | 0000000 | 00000 |
| 1" | 360 | John Crane Type 6 Pac-Seal Type 16 Sealol Type 60L | 1.000" | 1.552" | 0.812" | 1.000" | 1.625" | 0.437" | Phenolic Plastic | Ceramic | 150 | 00000000 | 00000 |
304 Stainless Steel Case and Spring with Viton® Fluoroelastomer Rubber Diaphragm and Gasket | |||||||||||||
| 5/8" | 200V, 516V | John Crane Type 6 Pac-Seal Type 16 Sealol Type 60L | 0.625" | 1.185" | 0.718" | 0.625" | 1.250" | 0.406" | Phenolic Plastic | Ceramic | 150 | 0000000 | 00000 |
| 5/8" | 606116 | John Crane Type 6 Pac-Seal Type 16 Sealol Type 60L | 0.625" | 1.190" | 0.718" | 0.625" | 1.250" | 0.406" | Silicon Carbide | Silicon Carbide | 150 | 0000000 | 00000 |
| 3/4" | 201V, 851V | John Crane Type 6 Pac-Seal Type 16 Sealol Type 60L | 0.750" | 1.300" | 0.718" | 0.750" | 1.375" | 0.406" | Phenolic Plastic | Ceramic | 150 | 0000000 | 00000 |
| 3/4" | 201VSC | John Crane Type 6 Pac-Seal Type 16 Sealol Type 60L | 0.750" | 1.312" | 0.718" | 0.750" | 1.375" | 0.406" | Silicon Carbide | Silicon Carbide | 150 | 0000000 | 00000 |
High-Speed Mechanical Pump Shaft Seals
Built for high-speed circulation and dispensing pumps, these seals have a short spring that facilitates speeds up to 10,000 rpm. The spring-loaded design keeps the sealing surfaces in contact as the material wears. Seals come furnished as two pieces—the seal and the seat. The seal is comprised of the case, spring, diaphragm, and washer, which come locked together as one piece. The seat is comprised of the seat and the gasket.
Buna-N diaphragms and gaskets resist grease and a wide range of oils.
Viton® fluoroelastomer diaphragms and gaskets resist a wider range of chemicals than Buna-N.
Note: Maximum performance values cannot be achieved simultaneously; for example, speed is affected by pressure, temperature, and other operating conditions.
For technical drawings and 3-D models, click on a part number.
Seal | Seat | Material | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| For Shaft Dia. | Trade Number | Manufacturer/ Brand Equivalent | ID | OD | Wd. | ID | OD | Wd. | Washer | Seat | Max. Pressure, psi | Each | |
304 Stainless Steel Case and Spring with Buna-N Rubber Diaphragm and Gasket | |||||||||||||
| 5/8" | 1000 | John Crane Type 6A Pac-Seal Type 68 Sealol Type 6 | 0.625" | 1.437" | 0.615" | 0.625" | 1.250" | 0.406" | Phenolic Plastic | Ceramic | 75 | 00000000 | 00000 |
| 5/8" | 409 | John Crane Type 6A Pac-Seal Type 68 Sealol Type 6 | 0.625" | 1.437" | 0.615" | 0.625" | 1.060" | 0.187" | Phenolic Plastic | Iron/Nickel Blend | 75 | 0000000 | 00000 |
| 5/8" | 600 | John Crane Type 6A Pac-Seal Type 68 Sealol Type 6 | 0.625" | 1.437" | 0.615" | 0.625" | 1.187" | 0.343" | Phenolic Plastic | Ceramic | 75 | 0000000 | 00000 |
| 3/4" | 601 | John Crane Type 6A Pac-Seal Type 68 Sealol Type 6 | 0.750" | 1.575" | 0.615" | 0.750" | 1.375" | 0.406" | Phenolic Plastic | Ceramic | 75 | 00000000 | 00000 |
304 Stainless Steel Case and Spring with Viton® Fluoroelastomer Rubber Diaphragm and Gasket | |||||||||||||
| 1/2" | 80509 | John Crane Type 6A Pac-Seal Type 68 Sealol Type 6 | 0.500" | 1.125" | 0.537" | 0.500" | 1.000" | 0.312" | Carbon | Ceramic | 75 | 0000000 | 00000 |
Heavy Duty Mechanical Pump Shaft Seals
Multiple internal springs ensure these seals keep the sealing surfaces in contact in demanding applications, such as agricultural, chemical, and mining pumps. Seals come furnished as two pieces—the seal and the seat. The seal is comprised of the case, springs, diaphragm, and washer, and the seat is comprised of the seat and the gasket.
Note: Maximum performance values cannot be achieved simultaneously; for example, speed is affected by pressure, temperature, and other operating conditions.
For technical drawings and 3-D models, click on a part number.
Seal | Seat | Material | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| For Shaft Dia. | Manufacturer/ Brand Equivalent | ID | OD | Wd. | ID | OD | Wd. | Washer | Seat | Max. Pressure, psi | Each | |
316 Stainless Steel Case and Spring with Viton® Fluoroelastomer Rubber Diaphragm and Gasket | ||||||||||||
| 5/8" | John Crane Type 8T Pac-Seal Type 8T | 0.625" | 1.062" | 0.937" | 0.625" | 1.250" | 0.406" | Carbon | Ceramic | 300 | 0000000 | 0000000 |
| 3/4" | John Crane Type 8T Pac-Seal Type 8T | 0.750" | 1.187" | 0.937" | 0.750" | 1.375" | 0.406" | Carbon | Ceramic | 300 | 0000000 | 000000 |
| 1" | John Crane Type 8T Pac-Seal Type 8T | 1.000" | 1.437" | 1.000" | 1.000" | 1.625" | 0.437" | Carbon | Ceramic | 300 | 0000000 | 000000 |
| 1 1/4" | John Crane Type 8T Pac-Seal Type 8T | 1.250" | 1.687" | 1.000" | 1.250" | 1.875" | 0.437" | Carbon | Ceramic | 300 | 0000000 | 000000 |
| 1 3/8" | John Crane Type 8T Pac-Seal Type 8T | 1.375" | 1.937" | 1.375" | 1.375" | 2.000" | 0.437" | Carbon | Ceramic | 300 | 0000000 | 00000000 |
| 1 1/2" | John Crane Type 8T Pac-Seal Type 8T | 1.500" | 1.937" | 1.125" | 1.500" | 2.125" | 0.437" | Carbon | Silicon Carbide | 300 | 0000000 | 00000000 |
| 1 3/4" | John Crane Type 8T Pac-Seal Type 8T | 1.750" | 2.312" | 1.375" | 1.750" | 2.500" | 0.437" | Carbon | Silicon Carbide | 300 | 0000000 | 00000000 |