Lids & o-ringsWaterway 6" Trap Lid O-ring 805-0436
A flattened or cracked o-ring is the most common reason a pump sucks air, won't prime or leaks. Fits Waterway.

$20.99 + $10.99 shipping
A flattened or cracked o-ring is the most common reason a pump sucks air, won't prime or leaks. Fits Pentair.
Pentair Pump Lid O-Ring (350013Z). A flattened or cracked o-ring is the most common reason a pump sucks air, won't prime or leaks. Fits Pentair.
A flattened or cracked o-ring is the most common reason a pump sucks air, won't prime or leaks. Match the part number to your pump, filter or valve, and lube new o-rings with silicone or Teflon lube.
Lids & o-ringsA flattened or cracked o-ring is the most common reason a pump sucks air, won't prime or leaks. Fits Waterway.
Lids & o-ringsA flattened or cracked o-ring is the most common reason a pump sucks air, won't prime or leaks. Fits Hayward.
Lids & o-ringsA flattened or cracked o-ring is the most common reason a pump sucks air, won't prime or leaks. Fits Hayward.
Lids & o-ringsA flattened or cracked o-ring is the most common reason a pump sucks air, won't prime or leaks. Fits Pentair, Sta-Rite.