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The BRASS CRAFT SERVICE PARTS 709-501 is a 2-pack of cone washer rings designed for use with water supply tube connections. Each washer measures 1/2 inch inner diameter by 23/32 inch outer diameter and provides a reliable seal at compression-style fittings. These cone washers are a standard consumable in plumbing service work, used when replacing or reseating supply line connections at shutoff valves, faucets, and fixture stops. Plumbers and plumbing service technicians keep these on hand as routine replacement stock during fixture service calls.
Cone washer rings are used wherever a water supply tube seats against a valve or fitting body with a conical compression seat. Typical applications include kitchen and bathroom faucet supply line connections, toilet fill valve supply tubes, and shutoff valve outlet connections in both residential and light commercial plumbing. The 1/2 inch I.D. size fits standard 1/2 inch nominal supply tube ends.
Designed as an OEM-style replacement cone washer for standard 1/2 inch water supply tube connections at compression-seat shutoff valves and faucet supply fittings.
Shut off the water supply at the upstream valve and relieve line pressure before removing the supply tube. Inspect the valve or fitting seat for scoring or corrosion before seating the new washer. Hand-tighten the supply nut first, then snug with a wrench — overtightening a cone washer will deform it and cause leaks. Work must comply with applicable local plumbing codes.
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