Armstrong International A21958-1 Gasket Universal Compatibility: Serves as the

Universal Compatibility: Serves as the primary replacement rollout switch for multiple Lennox-family brands

If the #46 drill opening is obstructed

This 8-3/4 inch rod is essential for maintaining precise mechanical translation between the actuator's telescoping piston rod and the damper's crank arm

Safety Notice:

Armstrong International A21958-1 Gasket Universal Compatibility: Serves as theThe Armstrong International A21958 1 Gasket is a precision engineered sealing component designed for Float & Thermostatic (F&T) steam traps. This high temperature gasket ensures a pressure tight seal between the trap body and cap, preventing steam loss and maintaining system efficiency. Compatible with a broad range of Armstrong F&T traps, including the AI2, A3, AI3, A4, AI4, A5, BI2, BI3, B4, BI4, and B5 series, this component is critical for