Pneumatic Seals | McMaster-Carr

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System of Measurement

Seal ID

Seal OD

For Cylinder Type

Bore Diameter

Rod Diameter

For Use With

Diluted Salt Solutions

Fluorinated Solvents

Synthetic Lubricants

Transmission Fluid

Acetic Acid (White Vinegar)

For Sealing

Material

Molybdenum Disulfide

Stainless Steel

Groove Diameter

Cylinder Seal Type

Cushioning Rod Seal

Maximum Pressure

Less than 1,000 psi

1,000 psi to 1,999 psi

2,000 psi to 2,999 psi

3,000 psi to 5,999 psi

6,000 psi or greater

OD

Hardness

Loaded Type

Square Profile O-Ring

Maximum Temperature

Less than 250° F

250° F to 399° F

400° F to 499° F

500° F to 999° F

1,000° F or greater

Color

O-Ring Material

Hardness Rating

RoHS

Compliant with Exemptions

REACH

Export Control Classification Number (ECCN)

DFARS Specialty Metals

Minimum Temperature

-250° F or less

-249° F to -100° F

-99° F to -50° F

-49° F to -25° F

Greater than -25° F

How can we improve?

496 Products

Sealing

U-Cup Seals

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

Piston Seals

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

Rod Wipers

Scrape dirt off rods to keep the inside of cylinders clean

Rod Seals

Maintain pressure inside cylinders and prevent fluid leaks

Spring-Loaded Seals

Spring-Loaded Seals

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

Cushioning Seals

Cushioning Seals

Reduce wear and noise in air-powered cylinders by blocking the piston from hitting the cylinder body

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

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

Thread Sealants

Thread Sealants

Create a seal between threaded connections to prevent loosening from vibration

Fluid Handling

Tube Fitting Rings

Tube Fitting Rings

Prevent leaks at tubing connection points

Power Transmission

Compressed Air Filter Seals

Compressed Air Filter Seals

Replace O-rings in compressed air filters

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