Pump Seals | McMaster-Carr

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Shaft Diameter

Seal OD

For Use With

Diluted Salt Solutions

Synthetic Lubricants

Transmission Fluid

Acetic Acid (White Vinegar)

Ammonium Hydroxide

Seal ID

Manufacturer/Brand Equivalent

John Crane Type 1

John Crane Type 6

John Crane Type 6A

John Crane Type 8T

John Crane Type 21

Pac-Seal Type 8T

Pac-Seal Type 16

Pac-Seal Type 21

Pac-Seal Type 31

Pac-Seal Type 51

Pac-Seal Type 68

Sealol Type 43 CE Long

Sealol Type 43 CE Short

Sealol Type 43 CU Short

Seat Material

Silicon Carbide

System of Measurement

Maximum Temperature

Less than 250° F

250° F to 399° F

400° F to 499° F

500° F to 749° F

750° F or greater

Diaphragm Material

Fluoroelastomer

Viton® Fluoroelastomer

Gasket Material

Manufacturer Equivalent Number

Spring Shape

Maximum Pressure

Less than 500 psi

500 psi to 999 psi

1,000 psi to 1,999 psi

2,000 psi to 3,499 psi

3,500 psi or greater

Washer Material

Silicon Carbide

Seat Width

Spring Material

Stainless Steel

Case Material

Stainless Steel

Shaft Seal Motion

Minimum Temperature

-400° F or less

-399° F to -250° F

-249° F to -25° F

-24° F to -1° F

Greater than 0° F

REACH

RoHS

Export Control Classification Number (ECCN)

DFARS Specialty Metals

How can we improve?

529 Products

Sealing

Shaft Seals

Prevent leaks in motors, pumps, and gearboxes

Packing Seals

Fill in gaps around pump shafts, valve stems, and agitators to prevent leaks

Packing Seal Lubricating Rings

Packing Seal Lubricating Rings

Install between layers of packing seals to distribute lubricants evenly; also known as lantern rings

Raw Materials

Rubber

Compresses and bounces back to shape; often used for sealing, cushioning, and shock absorbing

The quick brown fox jumped over the lazy dog. Pedestal (35" Ht. x 4" Wd. x 4" Dp.)