The T&S Brass 000763-20 is a high-quality removable brass seat designed specifically for the B-1100 Series faucets. With a 9/16" outer diameter and a 1/2-27 UN male thread, this durable component ensures a secure fit and reliable performance. NSF certified, it meets stringent health and safety standards, making it an ideal choice for commercial and residential applications. Enhance the longevity and efficiency of your faucet with this essential part.