The T&S Brass 009615-40 Monel Seat Hot Insert is a durable replacement component designed to ensure reliable sealing and smooth operation in commercial faucet assemblies. Constructed from corrosion-resistant Monel metal, it provides long-lasting performance even in demanding water conditions. This insert functions by forming a tight, leak-free seal within the valve body, helping maint... https://partsfe.com/inserthot-monel-seatleadfree-for-t-s-part-009615-40