Washer Seals | McMaster-Carr

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System of Measurement

ID

OD

Width

Material

Silicon Carbide

Stainless Steel

Cross Section Shape

Dash Number

Color

Screw Size

For Use With

Diluted Salt Solutions

Fluorinated Solvents

Synthetic Lubricants

Transmission Fluid

Acetic Acid (White Vinegar)

Thickness

0.018" to 0.025"

0.019" to 0.043"

0.021" to 0.041"

0.024" to 0.038"

0.026" to 0.036"

0.033" to 0.047"

0.035" to 0.045"

0.035" to 0.070"

0.036" to 0.044"

0.036" to 0.056"

0.042" to 0.052"

0.043" to 0.057"

0.045" to 0.055"

0.046" to 0.078"

0.047" to 0.077"

0.047" to 0.109"

Hardness Rating

Maximum Temperature

Less than 250° F

250° F to 299° F

300° F to 399° F

400° F to 499° F

500° F or greater

Washer Type

Core Material

Environment

Food and Beverage

Fractional ID

Minimum Temperature

-250° F or less

-249° F to -100° F

-99° F to -50° F

-49° F to -1° F

Greater than 0° F

Fractional Width

Fractional OD

RoHS

Compliant with Exemptions

REACH

Specifications Met

DFARS Specialty Metals

Export Control Classification Number (ECCN)

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13,945 Products

Fastening and Joining

Sealing Washers

Sealing Washers

Prevent fluids from leaking around fasteners

Spacers

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

Sealing

O-Rings

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

12,299 products

Backup Rings

Extend the life of O-rings and improve their performance under high pressure

Hose Washers

Place inside nozzles and spigots to prevent leaks in an attached hose

Shaft Seals

Prevent leaks in motors, pumps, and gearboxes

Facility and Grounds Maintenance

Faucet Washers

Seal faucet components so they don’t leak

Sink Drain Fitting Washers

Sink Drain Fitting Washers

Replace the washers in sink drain fittings

Fluid Handling

Tube and Tube Fittings

Tube and Tube Fittings

Typically more flexible than pipe for carrying liquids and gases in short runs around equipment

Electrical

Electrical Enclosure Fasteners

Electrical Enclosure Fasteners

Mount components to your enclosure without worrying about leaks

Conduit and Conduit Fittings

Conduit and Conduit Fittings

Protect wiring from impact and the environment in runs indoors, outdoors, and underground

Raw Materials

Rubber

Compresses and bounces back to shape; often used for sealing, cushioning, and shock absorbing

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