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The ALL-SOURCE 416213 is a poly slip-joint washer set designed for use in drain line connections under sinks and at fixture traps. The card includes six washers total: three at 1-1/4 inches and three at 1-1/2 inches, covering the two most common residential P-trap and drain arm sizes in a single purchase. Made from polyethylene, these washers create a watertight seal at slip-joint fittings without the need for adhesives or thread sealant. Plumbers and plumbing maintenance technicians reach for this type of washer when servicing or replacing trap assemblies, drain extensions, and basket strainer tailpieces.
This washer set fits standard residential and light commercial sink drain applications. The dual-size assortment makes it practical for service calls where the tech may encounter either 1-1/4 inch or 1-1/2 inch slip-joint connections on the same job. Common install locations include kitchen sink P-traps, bathroom lavatory traps, and laundry standpipe connections. The retail-card packaging keeps washers organized and ready for use in a service bag or van stock.
Designed as an OEM-style replacement for standard 1-1/4 inch and 1-1/2 inch slip-joint drain fittings commonly found in residential and light commercial sink drain assemblies.
Slip-joint washers are installed by plumbers during trap assembly, drain repair, or fixture replacement. Shut off the water supply and clear any standing water from the trap before disassembling slip-joint connections. Seat the washer fully inside the slip nut before hand-tightening; overtightening the slip nut with pliers can deform the washer and cause leaks. Work performed on drain systems must comply with applicable local plumbing codes and IPC standards.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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