Sealing Washers | McMaster-Carr

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System of Measurement

Screw Size

ID

1/64" to 11/16"

1/64" to 23/32"

1/64" to 1 1/8"

1/64" to 1 1/4"

OD

Material

Stainless Steel

Thickness

0.010" to 0.020"

0.014" to 0.016"

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"

0.028" to 0.034"

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"

Washer Type

Performance

Abrasion Resistant

Chemical Resistant

Corrosion Resistant

Electrically Insulating

High Temperature

Low Temperature

Metal Detectable

Moisture Resistant

Color

Environment

Food and Beverage

Width

Cross Section Shape

Hardness

For Use With

Diluted Salt Solutions

Fluorinated Solvents

Liquid Insecticides

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

Finish

Chlorine Treated

Dash Number

RoHS

Compliant with Exemptions

Hardness Rating

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

REACH

Shape

Application

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

DFARS Specialty Metals

Export Control Classification Number (ECCN)

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16,374 Products

Sealing Washers

Sealing Washers

Sealing Washers

Choose from rubber, PTFE, hard fiber, or metal

Bonded Sealing Washers

Bonded Sealing Washers

Two layers create a stronger seal than metal or rubber alone

High-Pressure Bonded Sealing Washers

High-Pressure Bonded Sealing Washers

Prevent leaks in pumps, hydraulic systems, and other pressurized lines

Washdown Bonded Sealing Washers

Washdown Bonded Sealing Washers

NEMA or IP rated to maintain the washdown rating of your enclosure

Sanitary Bonded Sealing Washers

Sanitary Bonded Sealing Washers

Free of nooks and crannies where dirt and bacteria could collect

Sealing Washer Assortments

Sealing Washer Assortments

A collection of common sizes to prevent leaks around nuts and screws

Other Products

Tube Fitting Rings

Tube Fitting Rings

Prevent leaks at tubing connection points

O-Rings

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

13,865 products

Washers

Nearly every size and shape imaginable, from flat washers to clipped to curved

Cushioning Washers

Cushioning Washers

Cushion joints to dampen vibration and protect them from wear

Grommets

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

Insulating Washers

Insulating Washers

Isolate screws from electrical current and prevent corrosion from mating different metals

Hose Washers

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

Faucet Washers

Seal faucet components so they don’t leak

Spacers

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

Electrical Enclosure Fasteners

Electrical Enclosure Fasteners

Mount components to your enclosure without worrying about leaks

Vibration-Damping Mounts

Vibration-Damping Mounts

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

Sink Drain Fitting Washers

Sink Drain Fitting Washers

Replace the washers in sink drain fittings

Backup Rings

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

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