The U.S. Seal PS-961 is Specifically suited for Spa and Hot Tub Applications. The PS-961 uses Sintered Carbon providing better resistance to heat, abrasion and chemicals.
Description:
5/8" Shaft
Premium Seal Designed for Spa and Hot Tub Applications
Buna / Carbon Graphite SS with Ceramic Seat
Recommended for Hot Tub and Spa Applications
Not Recommended in Pools or Spas with Ozonators, Bromine or Chlorine Generators. Systems with Ozonators, Bromine or Chlorine Generators use PS-3865 Seal or PS-1905.