3 stable glass seals in sturdy rubber. Reliable, Leak-Free Seal – Engineered to create a tight, secure fit that helps prevent drips and leaks at the connection point Made from High-Quality, Flexible Rubber – Resistant to wear, compression, and everyday use for long-lasting performance Easy Drop-In Replacement – Simple to install with no special tools required, saving you time on maintenance or repairs Universal Compatibility – Designed to fit a wide range of standard fittings, making it a versatile addition to your spare parts kit