Raypak 105A/105B/183A Heat Exchange Gasket [3/4" ID, 1-1/8" OD] [Qty 9] (800014B) aquastar and this Poolvergnuegen version is

and this Poolvergnuegen version is designed for 4-wheel cleaner applications using the PVGXH808KIT reference

and SP1098 applications

That helps improve repair quality without forcing a broader replacement than necessary

Replacing the inlet-side adapter can help restore more dependable feeder flow support and cleaner plumbing connection performance

It is often replaced when the original grid fabric is torn

Raypak 105A/105B/183A Heat Exchange Gasket [3/4" ID, 1-1/8" OD] [Qty 9] (800014B) aquastar and this Poolvergnuegen version isThe Raypak heat exchange gasket set is designed for compatible 105A, 105B, and 183A heater applications where multiple sealing points in the heat exchange area need fresh gaskets. A gasket like this is useful because it helps maintain leak protection and cleaner sealing at critical joints inside the heater assembly. This replacement is especially useful when the original gaskets are flattened, brittle, or being disturbed during service. A nine piece