Material: Our 20pcs Seal Washer set is made from silicon rubber, ensuring long-lasting performance and reliable sealing for various plumbing applications. Multiple Sizes Included: This pack features a variety of sizes, including 1/2", 3/4", and 1", providing the perfect flat gasket or O-ring for any faucet or plumbing fixture. Standard Design: Designed to meet standard specifications, these Seal Washers offer a precise fit and optimal sealing, preventing leaks and ensuring efficient water flow in your plumbing systems. Versatile Use: Ideal for both professional plumbers and DIY enthusiasts, these silicon rubber flat gaskets are suitable for a wide range of applications, including faucets, pipes, and other plumbing needs. Easy Installation: The flexible and resilient nature of our Seal Washers allows for easy installation and removal, making maintenance and repairs hassle-free while prolonging the life of your plumbing fixtures., Manufacturer: QAXRZCUCD