Hayward OEM Strainer Cover O-Ring for Northstar Pump$4599
Quick overview
- Genuine Hayward The factory SPX4000S o-ring, sized to the Northstar lid.
- Fits Northstar pumps Listed with the Hayward Northstar pump parts, 2008 to current manufacture.
- Rubber construction Molded rubber, the same material as the seal it replaces.
- Stops air leaks The strainer lid is the most common place a pump pulls air, and a flat or cracked o-ring is usually why.
- Fixes lost prime A pump that will not hold prime or shows air in the strainer pot is often one o-ring away from working.
- Lubricate on fitting A silicone based o-ring lubricant helps it seat and makes the lid easier to remove next time.
Similar products
Other products people compare with this one.
Product details
The Hayward SPX4000S is the genuine rubber strainer cover o-ring for Northstar pumps, listed with the Northstar parts for units built from 2008 to current.
The part that causes air leaks
The strainer lid sits at the top of the suction side, which makes it the easiest place for a pump to pull air. The o-ring is what keeps it sealed, and it does not last forever: heat, chlorine and the repeated squash of the lid flatten it, then it hardens and cracks. When that happens the pump struggles to prime, air collects in the basket, and flow drops. Owners often chase the problem into the plumbing when the seal is the whole story.
Fitting it
Clean the groove and the lid face before you seat the new o-ring, and use a silicone based o-ring lubricant. That helps it seat evenly, keeps the rubber supple through the season and stops the lid gluing itself down before the next basket clean.
| Brand | Hayward |
|---|---|
| Manufacturer part number | SPX4000S |
| UPC | 610377079242 |
| Type | Strainer cover o-ring |
| Part type | Pool pump part |
| Material | Rubber |
| Fits | Hayward Northstar pumps |
| Listed under | Hayward Northstar pump 2008 to current parts |
| Shipping weight | 0.1 lb |
| Ships | Parcel |
Request a quote
Need a volume price, a freight quote, or pricing in writing before you order? We reply the same business day.
Customer reviews
More from Hayward
Questions and answers
What people ask about this product, answered by our pool techs.