This o-ring (some models have silicone adhesive) fits between the diverter valve collar and the spa shell to prevent water from dripping down into the equipment compartment This o-ring doesn't fit on the actual valve like the 34318

This is the large o-ring found on all water diverter valves beginning in 1994 (Smart Jet Valve) Typically, by the time this o-ring needs to be replaced the entire valve needs to be replaced The valves will warp and/or score with debris over time making the ...read more

Small 0-ring for all 1994 to now Smart Jet Selector Valves (i e diverter valves)