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The PLUMB SHOP DIV BRASSCRAFT 784-493 is a rubber beveled slip joint washer designed for use with 1-1/4 inch outside diameter drain tubing. Sold as a 2-pack, this washer creates a watertight seal at slip joint connections in drain and waste plumbing assemblies. The beveled profile seats properly against standard slip joint nuts, allowing the nut to compress the washer evenly around the tube without distortion. Rubber construction provides the flexibility needed to conform to minor surface irregularities at the joint face. This is a routine service part stocked and installed by plumbers during trap repairs, replacements, and drain assembly work.
This washer fits standard 1-1/4 inch OD slip joint drain tubing, which is commonly found under kitchen and bathroom sinks in residential and light commercial applications. Typical use cases include P-trap replacement, extension tube connections, and cleanout repairs where the existing washer has deteriorated, hardened, or is leaking. The part is carded for retail and service truck use.
Designed as an OEM-style replacement slip joint washer for standard 1-1/4 inch OD residential and light commercial drain tubing assemblies including P-traps, extension tubes, and similar slip joint drain components.
Installed by licensed plumbers or qualified technicians during drain trap and waste line service. Turn off the water supply and clear the trap of standing water before disassembling the slip joint. Seat the beveled washer with the tapered face oriented toward the slip joint nut before hand-tightening, then snug with channel-lock pliers — avoid overtightening, which can cut or deform the washer. Work performed on drain assemblies in occupied buildings should comply with applicable local plumbing codes referencing the IPC or UPC.
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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