Piston Gaskets | McMaster-Carr

Filter by

Seal ID

Seal OD

Bore Diameter

Rod Diameter

For Cylinder Type

For Use With

Diluted Salt Solutions

Synthetic Lubricants

Transmission Fluid

Acetic Acid (White Vinegar)

Ammonium Hydroxide

Groove Diameter

For Sealing

Cylinder Seal Type

Material

Silicon Carbide

Stainless Steel

Shaft Diameter

Maximum Pressure

For Shaft Motion

Loaded Type

Square Profile O-Ring

T-Profile O-Ring

Maximum Temperature

Less than 200° F

200° F to 224° F

225° F to 249° F

250° F to 399° F

400° F or greater

Hardness

Color

Maximum Speed

Hardness Rating

RoHS

REACH

Export Control Classification Number (ECCN)

DFARS Specialty Metals

Minimum Temperature

How can we improve?

375 Products

U-Cup Seals

O-Ring-Loaded U-Cup Seals

O-Ring-Loaded U-Cup Seals

An O-ring forms a better seal at lower pressures than unsupported U-cups
Also known as PolyPaks

High-Stability O-Ring-Loaded U-Cup Seals

High-Stability O-Ring-Loaded U-Cup Seals

Wider than our other O-ring-loaded U-cups for improved stability
Also known as PolyPaks

U-Cup Seals

Create less friction than O-ring-loaded U-cups, so they wear more slowly

High-Pressure U-Cup Seals

High-Pressure U-Cup Seals

Handle over 80 times more pressure than our Buna-N U-cup seals

Other Products

Piston Seals

Prevent leaks inside pistons by creating a seal against the cylinder bore

Spring-Loaded Seals

Spring-Loaded Seals

Seal rods and pistons with a wider range of temperature and chemical resistance than U-cup seals

Rod Wipers

Scrape dirt off rods to keep the inside of cylinders clean

Shaft Seals

Prevent leaks in motors, pumps, and gearboxes

Hydraulic Cylinder Seals

Hydraulic Cylinder Seals

Replace seals on the piston or rod end of hydraulic cylinders

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