Buna-N Rubber Washers | McMaster-Carr

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Material

Stainless Steel

O-Ring Material

System of Measurement

ID

1/64" to 11/16"

1/64" to 1 1/8"

1/64" to 1 1/2"

1/32" to 1 3/4"

1/32" to 2 7/8"

OD

Width

Cross Section Shape

Thickness

0.019" to 0.043"

0.021" to 0.041"

0.026" to 0.036"

0.035" to 0.045"

0.036" to 0.044"

0.045" to 0.055"

0.046" to 0.078"

0.047" to 0.077"

0.052" to 0.072"

0.054" to 0.070"

0.059" to 0.069"

0.073" to 0.083"

0.089" to 0.099"

0.104" to 0.114"

Screw Size

Washer Type

Hardness

Color

For Use With

Diluted Salt Solutions

Synthetic Lubricants

Transmission Fluid

Hardness Rating

Dash Number

Maximum Temperature

100° F to 249° F

250° F to 499° F

Environment

Food and Beverage

Performance

Chemical Resistant

Corrosion Resistant

High Temperature

Metal Detectable

X-Ray Detectable

Seal ID

Fractional ID

Fractional Width

RoHS

Compliant with Exemptions

REACH

DFARS Specialty Metals

Export Control Classification Number (ECCN)

Seal Material

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5,983 Products

Fastening and Joining

Sealing Washers

Sealing Washers

Prevent fluids from leaking around fasteners

Cushioning Washers

Cushioning Washers

Cushion joints to dampen vibration and protect them from wear

Spacers

Unthreaded to create space between two surfaces or objects, often to align them

Socket Retaining Rings

Socket Retaining Rings

Secure sockets and adapters to impact tools

Sealing

O-Rings

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

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

O-Ring Cord Stock

O-Ring Cord Stock

Cut to length to create customized seals

Shaft Seals

Prevent leaks in motors, pumps, and gearboxes

Facility and Grounds Maintenance

Faucet Washers

Seal faucet components so they don’t leak

Garden Hose Nozzles

Garden Hose Nozzles

Control the flow from a garden hose for spraying and washing

Squeegees

Wipe liquids off of windows, floors and other surfaces

Fluid Handling

Tube Fitting Rings

Tube Fitting Rings

Prevent leaks at tubing connection points

Strainers

Install next to valves and pumps to catch debris in your line

Building and Machinery Hardware

Grommets

Protect wire, cable, and cords from holes with sharp or rough edges

Vibration-Damping Mounts

Vibration-Damping Mounts

Attach to machinery to reduce vibration and noise and extend service life

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