This o-ring is used to seal the heater element (31255) into the heater housing(s) (part 10475 or 30786)

This o-ring is used in conjunction with the Retainer Gasket (part 70092) to seal the heater element(s)(part 31409-BYP) into the heater housing (part 70192)

One of two o-rings used to seal the cartridge-style heater to its flange on all 1995-1996 Hot Spring & Tiger River spas and 1995-1997 Hot Spot spa models The second o-ring is a 34876

One of two o-rings used to seal the cartridge-style heater to the flange on all 1995-1996 Hot Spring & Tiger River spas and 1995-1997 Hot Spot spa models The other o-ring is a 34877