Shaft-Mounted Rotary Seals
Also known as V-rings and flingers, these seals protect shaft bearings by blocking dust and other contaminants while retaining lubricant. They’re Buna-N for excellent resistance to oil and grease. To install, stretch the seal over your shaft and press it firmly against the face plate. The Seal OD and Seal Width listed are the dimensions of the seal after it is installed.
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.
For Shaft | Seal | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dia., mm | Dia.Range, mm | For Face Plate Dia., mm | ID, mm | OD, mm | Wd., mm | Max. Speed, rpm | Max. Pressure, psi | Temp. Range, °F | Hardness | Color | Each | |
Buna-N Rubber | ||||||||||||
| 18 | 17.5-19 | 17.5-19 | 16 | 22 | 3 | 6,900 | 5 | -40° to 212° | Durometer 60A (Medium) | Black | 00000000 | 00000 |
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. Seal Width represents the working height, which is the compressed length when installed. The seat is comprised of the seat and the gasket. Products cannot be sold outside North America due to restrictions.
Buna-N diaphragms and gaskets resist grease and a wide range of oils.
Carbon washers are for use with clean liquids.
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., mm | Manufacturer/ Brand Equivalent | ID, mm | OD, mm | Wd., mm | ID, mm | OD, mm | Wd., mm | Washer | Seat | Spring Shape | Includes | Max. Pressure, psi | Cannot Be Sold To | Each | |
304 Stainless Steel Case and Spring with Buna-N Rubber Diaphragm and Gasket | |||||||||||||||
| 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 | 30.700 | 22.250 | 19.700 | 35.000 | 10.250 | Carbon | Ceramic | Straight | Spring Retainer | 250 | Outside North America | 00000000 | 000000 |