Union Seals | McMaster-Carr

Filter by

System of Measurement

Seal ID

Seal OD

Seal Width

Shaft Diameter

For Use With

Ball Joint Rod Ends

Diluted Salt Solutions

Faucet Sprayers

Fluorinated Solvents

Synthetic Lubricants

Transmission Fluid

Acetic Acid (White Vinegar)

ID

OD

Width

Material

Silicon Carbide

Stainless Steel

Vegetable Fiber

Cross Section Shape

Bore Diameter

Color

Hardness Rating

Hardness

Maximum Temperature

Less than 250° F

250° F to 299° F

300° F to 499° F

500° F to 999° F

1,000° F or greater

Dash Number

For Sealing

Rod Diameter

Loaded Type

Maximum Pressure

Less than 500 psi

500 psi to 999 psi

1,000 psi to 1,999 psi

2,000 psi to 9,999 psi

10,000 psi or greater

Minimum Temperature

-250° F or less

-249° F to -100° F

-99° F to -50° F

-49° F to -1° F

Greater than 0° F

REACH

RoHS

DFARS Specialty Metals

Export Control Classification Number (ECCN)

How can we improve?

15,027 Products

Sealing

Shaft Seals

Prevent leaks in motors, pumps, and gearboxes

U-Cup Seals

With a lip on both the inside and outside edges, they can be used for sealing rods and pistons

Rod Seals

Maintain pressure inside cylinders and prevent fluid leaks

Buffering Seals

Buffering Seals

Protect hydraulic cylinders from pressure spikes and shock in high-pressure applications

O-Rings

Fit snugly into a groove between parts to create a leak-resistant seal

11,541 products

O-Ring Cord Stock

O-Ring Cord Stock

Cut to length to create customized seals

Backup Rings

Extend the life of O-rings and improve their performance under high pressure

O-Ring Bonding Kits

O-Ring Bonding Kits

Everything needed to make O-rings

Gasket Material

Gasket Material

Cut custom shapes and sizes to fill gaps between flat surfaces

Pipe Gaskets

Form tight seals when connecting flanged pipe fittings

Drain Gaskets

Create a watertight seal between your drain and fixture without the mess of plumber's putty

Gasket Sealants

Gasket Sealants

Seal gaskets on metal parts

Power Transmission

Rod End Seals

Keep dirt out and lubrication in to extend the life of rod ends

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