U-Rings | McMaster-Carr

Filter by

System of Measurement

Thread Size

Material

Stainless Steel

ID

Seal ID

Seal OD

Height

Pipe Size

Finish

Center-to-Center

Inside Width

Seal Width

Thread Length

Bore Diameter

Rod Diameter

Nut Material

Polyurethane Rubber

Stainless Steel

Leg Diameter

Groove Width

For Cylinder Type

Mount Type

For Use With

Diluted Salt Solutions

Synthetic Lubricants

Transmission Fluid

Ammonium Hydroxide

Calcium Hydroxide

Ethylene Glycol

Isopropyl Alcohol

RoHS

Compliant with Exemptions

REACH

U.S.–Mexico–Canada Agreement (USMCA) Qualifying

Export Control Classification Number (ECCN)

DFARS Specialty Metals

How can we improve?

1,601 Products

U-Cup Seals

U-Cup Seals

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

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

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

U-Bolts

Anchor heavy pipe, tube, and conduit; stronger than routing clamps and hangers

Hydraulic Cylinder Seals

Hydraulic Cylinder Seals

Replace seals on the piston or rod end of hydraulic cylinders

Hose Coupling Gaskets

Hose Coupling Gaskets

Form tight seals on cam-and-groove, grip-lock, and twist-claw hose connections

Hoist Rings

Pivot to resist stress that would bend or break an eyebolt when lifting at an angle

Piston Seals

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

Cylinder Rod Glands

Cylinder Rod Glands

Replace the rod gland on hydraulic cylinders

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