The Conbraco Industries E-1818-00 3/4" Brass Washer is a durable sealing and spacing component designed to provide secure, leak-resistant connections in HVAC piping and valve assemblies. Manufactured from corrosion-resistant brass, it helps distribute pressure evenly and creates a reliable seal when installed between mating surfaces or threaded fittings. Commonly used in boilers, hydr... https://www.partshnc.com/e-1818-00-conbraco-industries-34-brass-washer