Raypak 105A/105B/155A/185A,Flange Gasket [1-5/8" ID, 2-5/8" OD] (062236B) jettrim This style works well when

This style works well when the goal is to keep the control point simple

keeping the spa easy to operate for anyone already used to the system

Back up rings help reinforce sealing assemblies so gaskets and o-rings can perform more reliably under pressure

Helps reduce line size within solvent-weld plumbing

Raypak 105A/105B/155A/185A,Flange Gasket [1-5/8" ID, 2-5/8" OD] (062236B) jettrim This style works well whenThe Raypak flange gasket is designed for compatible 105A, 105B, 155A, and 185A heater applications where the flange connection needs a fresh seal. A flange gasket is useful because it helps maintain leak protection at a critical joint while supporting a cleaner, more dependable reassembly. This replacement is especially useful when the original gasket is compressed, brittle, leaking, or being disturbed during repair. Matching the correct gasket