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The DANCO 75099B is a replacement O-ring designed to stop leaks at faucet spouts and valve stems. Measuring 1-27/32 inches in inner diameter by 2-3/32 inches in outer diameter, this O-ring installs inside the faucet body where worn or cracked seals allow water to escape around the spout. Replacing a failed O-ring is a straightforward, low-cost repair that restores a proper watertight seal without pulling the entire faucet fixture. Plumbers and experienced DIYers rely on this type of direct replacement to extend faucet service life. The part is sold individually and weighs 0.006 pounds.
This O-ring is suited for residential faucet repair applications where the original seal has degraded due to age, mineral buildup, or prolonged use. It fits a wide range of faucet brands commonly found in residential plumbing installations. Typical use cases include leaking spouts, dripping valve assemblies, and routine preventive maintenance during faucet rebuilds. The 103 size designation corresponds to a standard O-ring sizing series used across multiple faucet manufacturers.
Listed compatible brands include American Brass, Aqualine, Arrowhead, Cuthbert, Cygnet, General Tire, Gerber, Grand Haven, Harcraft, Indiana, Jameco, Price Pfister, Savoy, Sayco, Sinclare, Speakman, Sterling, Teck, Valley, Waltec, and Western Brass.
Installation is typically performed by a licensed plumber or experienced DIYer. Shut off the water supply to the affected faucet before beginning any disassembly. Remove the faucet handle and cartridge or stem assembly to access the O-ring seat, then seat the new O-ring fully before reassembly. Avoid using petroleum-based lubricants on rubber O-rings, as they can cause swelling and accelerated seal failure — use a silicone-based lubricant if needed.
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