Critical Safety Seal: Maintains the pressure boundary between the float chamber and the head mechanism to ensure reliable LWCO operation

Multi-System Compatibility: Certified for use in HVAC

Common Questions Is the B4022700 compatible with older B4022700B models

Does this part fit non-condensing 80% AFUE furnaces

creamy texture your customers expect

Armstrong International A21348-1 Gasket Critical Safety Seal: Maintains theAs a veteran tech, you know that reuse of a body seal is a shortcut to a callback. The Armstrong International A21348 1 Gasket is the specific OEM replacement gasket required to maintain a pressure tight seal on B2 and B3 Series Float & Thermostatic Steam Traps. Precision cut for the B series steam trap cover, this gasket ensures optimal seating between the body and cap, preventing high pressure steam leaks that compromise system energy efficiency.