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1,746 sizes in 7 materials. Pick OD, ID and thickness to jump straight to the product.
Rubberwasherwarehouse
Rubber Washer 3/4" OD x 1/2" ID x 1/16" Thick
Regular priceFrom $0.26Unit priceIn stock (1555 units)
Rubberwasherwarehouse
Rubber Washer 3/4" OD x 3/8" ID x 1/16" Thick
Regular priceFrom $0.26Unit priceIn stock (1885 units)
Rubberwasherwarehouse
Rubber Washer 3/4" OD x 1/4" ID x 1/8" Thick
Regular priceFrom $0.28Unit priceIn stock (5908 units)
Rubberwasherwarehouse
Rubber Washer 1" OD x 3/8" ID x 1/8" Thick
Regular priceFrom $0.31Unit priceIn stock (781 units)
Rubberwasherwarehouse
Rubber Washer 1-1/4" OD x 1/2" ID x 1/8" Thick
Regular priceFrom $0.35Unit priceIn stock (955 units)
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Rubber Washer 1/2" OD x 1/4" ID x 1/16" Thick
Regular priceFrom $0.19Unit price
Rubberwasherwarehouse
Rubber Washer 1" OD x 1/2" ID x 1/8" Thick
Regular priceFrom $0.31Unit priceIn stock (968 units)
Sold outRubberwasherwarehouse
Rubber Washer 1-1/2" OD x 3/4" ID x 1/8" Thick
Regular priceFrom $1.49Unit price
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Rubberwasherwarehouse
Rubber Washer 5/8" OD x 3/8" ID x 3/32" Thick
Regular priceFrom $0.36Unit priceIn stock (100 units)
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Sold outRubberwasherwarehouse
Rubber Washer 2-1/2" OD x 1-1/2" ID x 1/8" Thick
Regular price $4.99Unit price
Rubberwasherwarehouse
Rubber Washer 3/4" OD x 5/16" ID x 1/16" Thick
Regular priceFrom $0.34Unit priceIn stock (1000 units)
About Plumbing & Faucet Rubber Washers
Hand-picked rubber washer sizes for faucets, supply lines, slip joints, tank bolts, drains and pipe flanges — the dimensions plumbers actually reach for, from compact 1/2" faucet seats to 2-1/2" drain gaskets. Every size ships in all seven materials: choose EPDM for hot and cold potable water, Neoprene for general duty, or Silicone for high-heat fixtures.
New to plumbing washers? Read which materials and sizes work best for plumbing, fix a leaky hose with the garden hose guide, or repair a running toilet with the toilet repair guide. Need a different size? The Size Finder searches all 1,700+ sizes instantly.
FAQ
What rubber is best for plumbing washers?
EPDM is the top choice for water — it handles hot water, chlorine and steam without swelling. Neoprene works well for general cold-water duty; avoid Nitrile on potable hot water.
Faucet stem or filter housing sealed by a round ring in a groove? That's an O-ring, not a washer. Our sister store Rubber Feet Warehouse stocks nitrile O-rings, including the OR-100 for Big Blue filter housings.