Danco 1/2 in. D X 3/8 in. D #7 Rubber O-Ring 20 pk is a precise, reliable replacement seal designed for faucet repairs across a wide range of popular brands. With a 1/2" outer diameter, 3/8" inner diameter, and a 1/16" cross-section, this #7 O-ring fits compact spaces where a tight, durable seal matters most.
Made from durable rubber, these O-rings restore water-tight seals in valve stems, cartridge assemblies, and other faucet junctions, helping prevent drips and leaks after replacement or disassembly.
- Compatibility across brands: American Standard, Kohler, Mueller, Sayco, Universal Rundle, Waltec, and Michigan Brass faucets.
- Packaging in a polybag with 20 O-rings, providing convenient spares for future maintenance or multiple fixtures.
- Size specifics: 1/2" outer diameter, 3/8" inner diameter, and 1/16" wall thickness align with standard #7 O-ring specifications used in many faucet repair kits.
Why this size matters: the 1/2" OD and 3/8" ID correspond to common #7 O-ring dimensions, ensuring a predictable seal that seats reliably in tight channels and prevents leaks around valve seats and stems.
- Specific use cases: replace worn seals in faucet cartridges and stems, seal valve seats in bathroom and kitchen fixtures, or keep a ready supply for ongoing maintenance.
- Practical storage: the polybag packaging protects the O-rings from dust and deformation and makes them easy to organize in a repair kit.
- Maintenance efficiency: twenty pieces mean you can tackle multiple fixtures or rotate spares without reordering frequently.
Tips for best results: inspect the groove width and diameter before replacing; clean the seating area; lightly lubricate the O-ring with a compatible faucet lubricant before installation to reduce pinching and ensure a smooth, lasting seal during reassembly.
