Union Seals | McMaster-Carr

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Silicon Carbide

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Hardness Rating

For Use With

Ball Joint Rod Ends

Diluted Salt Solutions

Dissimilar Metals

Faucet Sprayers

Fluorinated Solvents

Grooved-End Pipe Fittings

Low Stress-to-Seal Flanges

Synthetic Lubricants

Maximum Temperature

Less than 250° F

250° F to 499° F

500° F to 999° F

1,000° F to 1,999° F

2,000° F or greater

Core Material

Fractional Width

Thickness

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

Fractional ID

Shape

Ring with Bolt Holes

Ring with Tines

Fractional OD

Specifications Met

REACH

RoHS

Export Control Classification Number (ECCN)

DFARS Specialty Metals

Seal ID

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How can we improve?

16,002 Products

Sealing

O-Rings

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

12,515 products

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

Gasket Sealants

Gasket Sealants

Seal gaskets on metal parts

Drain Gaskets

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

Cord Stock

Cut to length to create customized seals

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

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.)