Extra Hard O-Rings | McMaster-Carr

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System of Measurement

Seal ID

Seal OD

Rod Diameter

Bore Diameter

Material

316 Stainless Steel

Molybdenum Disulfide

For Use With

Diluted Salt Solutions

Fluorinated Solvents

Synthetic Lubricants

Transmission Fluid

Acetic Acid (White Vinegar)

Ammonium Hydroxide

Calcium Hydroxide

ID

For Cylinder Type

Shaft Diameter

Groove Diameter

OD

For Shaft Motion

Loaded Type

Square Profile O-Ring

T-Profile O-Ring

For Sealing

Hardness

Color

Maximum Temperature

Less than 250° F

250° F to 299° F

300° F to 499° F

500° F to 999° F

Maximum Pressure

Less than 1,000 psi

3,000 psi to 9,999 psi

10,000 psi or greater

Hardness Rating

RoHS

REACH

DFARS Specialty Metals

Export Control Classification Number (ECCN)

How can we improve?

366 Products

Sealing

Rod Wipers

Scrape dirt off rods to keep the inside of cylinders clean

Piston Seals

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

Head Seals

Maintain a seal even under fluctuating pressure; more reliable than an O-ring with a backup ring

Wear Rings

Guide rods and pistons to prevent uneven wear and extend the life of seals

Shaft Seals

Prevent leaks in motors, pumps, and gearboxes

Rod Seals

Maintain pressure inside cylinders and prevent fluid leaks

Packing Seals

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

Wear Ring Stock

Wear Ring Stock

Cut to make wear rings that fit any rod or bore to prevent uneven wear and extend the life of seals

Buffering Seals

Buffering Seals

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

Tube Fitting Gaskets

Tube Fitting Gaskets

Prevent leaks when connecting sanitary tube fittings

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