A faucet bibb washer is used on a faucet bibb, aka a shutoff valve, hose hydrant, silcock or spigot. All these names refer to a faucet located on the outside of your home. Even more so than indoor faucets, outdoor faucets can experience a lot of wear and tear. Extreme weather conditions can lead to faulty parts and expensive, water-wasting leaks. Rather than replace the whole faucet however, you might need to only replace the faucet bibb washer! These small, rubber parts are designed to keep a long-lasting seal, and provide a positive shut off for any bibb faucet.