A leaking washing machine hose connection almost always comes down to one part: the flat rubber washer inside the hose coupling. It costs a few dollars to replace and takes two minutes — here's how to pick the right one.
What Size Washer Does a Washing Machine Hose Use?
Washing machine fill hoses in the US use standard 3/4" garden hose thread (GHT) fittings on both ends — at the wall valves and at the machine inlets. The flat washer that seals them is typically about 1" OD with a 5/8"–3/4" ID, in 1/16" to 1/8" thickness. Both hot and cold hoses use the same size, and each hose needs a washer at both ends — so a full refresh takes four washers.
Shop every matching size in our Hose Washers collection — all 28 size/thickness combinations that fit 3/4" GHT couplings — or grab the Hose Washer 10-Pack and refresh every connection at once. Not sure? Measure your old washer in 30 seconds.
Which Material Is Best for Washing Machine Hoses?
- EPDM — the top choice: excellent hot water resistance and long service life on both hot and cold lines
- Nitrile — durable general-purpose option, good compression set resistance
- Silicone — handles the highest temperatures; ideal for sanitize-cycle machines
How to Replace a Washing Machine Hose Washer
- Turn off both water supply valves and unplug the machine
- Unscrew the hose from the valve (have a towel ready — some water will drain)
- Pry the old flat washer out of the coupling with a small flathead screwdriver
- Press the new washer flat into the coupling seat
- Hand-tighten the hose back on, then snug a quarter turn with pliers — don't overtighten, the washer does the sealing
- Repeat at all four connections, turn the water back on, and check for drips
Signs Your Hose Washers Need Replacing
Slow drips at the valve or machine connections, white mineral crust around the couplings, a washer that looks flattened, cracked or brittle when you disconnect the hose, or hoses that need more and more tightening to stop leaks. Rubber hose washers are a wear item — replacing them every time you swap hoses (and any time you move the machine) prevents the slow leaks that ruin floors.
Orders over $9.95 ship free from South Carolina, USA — a 4-pack refresh for both hoses qualifies easily. Browse the hose washers collection or ask us if you're unsure.