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

The Lochinvar & A.O. Smith 100076307 O-Ring FKM is a sealing component used in water heating and boiler assemblies within HVAC systems. It is fitted at joint interfaces to form a tight seal that prevents leakage between connected sections carrying water or gas. This o-ring is commonly used in tankless water heaters and related heating equipment where controlled sealing is required around internal passages and fittings. It supports the separation of different flow paths inside heat exchangers and valve areas and maintains proper sealing at connection points during the operation of compatible heating units and associated system assemblies.