Lochinvar & A.O. Smith 100076308 O-Ring FKM

The Lochinvar & A.O. Smith 100076308 O-Ring is a sealing ring used in water-heating and hydronic equipment to close joints between connected components. Its FKM elastomer construction provides resistance to elevated temperatures, chemicals, and operating fluids found within heating assemblies in HVAC systems. Positioned in a machined groove or mating connection, the ring compresses between surfaces to create a tight barrier against leakage. It can be installed around valves, fittings, manifolds and internal passages where fluid containment is required. Within the equipment, it supports pressure retention and maintains separation between internal flow paths and surrounding areas.