Pentair O-Ring 2-335 EP40 (79128900) is a replacement sealing part for compatible Pentair pool and spa equipment. O-rings, gaskets, square rings, and shaft seals help create watertight connections between lids, housings, valves, pumps, and other equipment assemblies.Replace this part when the existing seal is flattened, cracked, swollen, leaking, or damaged during service. For best results, clean the mating surfaces and confirm the correct part number, material, and application before installation. Replacement sealing component for compatible Pentair equipment Helps prevent leaks at the related equipment connection Useful for routine service, rebuilds, and leak repairs Confirm size, material, and equipment model before use Verify part number 79128900 before purchase
