O-Rings & Gaskets for Pool and Spa Products

If a pump is weeping at the lid, a filter is dribbling at the band clamp, or your spa heater is whistling air into the plumbing, you almost always need a fresh pool and spa O-ring or gasket. This collection brings together more than 1,300 replacement seals for pumps, filters, multiport valves, chlorinators, heaters, light niches, and jet bodies — sized to fit the equipment you already own and rated to handle chlorinated water, heat, and pressure.

Every seal here is sorted by the part it actually replaces, so you can match by equipment model instead of guessing diameters with a pair of calipers. You'll find OEM and OEM-equivalent Hayward pool pump O-rings, Pentair strainer lid seals, Waterway spa pump gaskets, Jacuzzi heater unions, and Aladdin replacement kits — including the high-wear lid O-rings, diffuser gaskets, seal plate O-rings, and shaft seals that fail first on a hot summer weekend. Spa techs will also find bath-tested silicone gaskets for jet bodies and suction fittings that hold up to longer dwell times at higher temperatures than standard pool seals.

Choosing the right elastomer matters more than most homeowners realize. Buna-N (nitrile) handles chlorinated pool water well at moderate temperatures, while EPDM and silicone are the go-to choices for hot tubs, salt cells, and ozone-treated systems — material guides from Parker's O-Ring Division back this up, and the CDC's healthy swimming guidance reinforces why a tight seal on chlorinators and feeders is a safety issue, not just a leak issue. When you're not sure which compound your equipment shipped with, the manufacturer schematic on Hayward or Pentair's site is the fastest way to confirm — and if you'd rather skip the schematic, call us and we'll walk it down with you.

Round out the repair with a fresh pool pump rebuild kit or matching filter parts from our broader catalog of more than 20,000 replacement items, all shipped free to the contiguous U.S. Whether it's a single drain plug seal or a complete gasket kit for a sand filter overhaul, the right pool and spa O-rings and gaskets are here — and our team is on the line at 1-866-535-0899 if you'd rather have a human confirm the fit before you order.

Explore the full O-Rings & Gaskets collection and get your pool or spa watertight again before the next weekend.