Description
Waterway 711-4030B 2 inch Heater and Pump Union Gasket with Ribbed O-Ring
OEM 2 inch union seal for heaters and pumps.
The Waterway 711-4030B 2 inch Union Gasket (SKU PST-WW7114030B, MPN 711-4030B) is the OEM ribbed O-ring gasket that seats between 2 inch slip or threaded unions on spa heaters, pump wet ends, and other flow-through plumbing. One face is flat, the other carries a molded raised O-ring rib that compresses into the union groove for a leak-tight seal without thread sealant or Teflon tape. Replace it any time you break a 2 inch union, swap a heater element, or chase a slow drip at the pump suction or discharge.
