Plumbing & Faucet Rubber Washers

Q: What rubber is best for plumbing washers?

EPDM is the top choice for water because it handles hot water, chlorine and steam without swelling. Neoprene works well for general cold-water duty.

(33 products)

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.