Lochinvar & A.O. Smith 100076307 O-Ring FKM

The Lochinvar & A.O. Smith 100076307 O-Ring is a sealing component used in water-heating and hydronic equipment to close joints between connected parts. Made from FKM elastomer and it provides a flexible seal around fittings, passages, and other mating surfaces where resistance to heat, chemicals and operating fluids is required in HVAC systems. Installed in valves, manifolds, pumps, and related assemblies, the ring prevents leakage while maintaining separation between internal and external areas within the system. It support pressure retention and proper fluid control by sealing connection points during normal equipment operation and service conditions.