
Quick overview
- Genuine Hayward Factory part SPX4000TS, also carried under the number O-510-0.
- NorthStar pumps The strainer cover T-ring for Hayward NorthStar pumps manufactured from 1998 through 2007.
- Rubber Molded rubber, the material Hayward specifies for this seal.
- T-ring, not a flat gasket The T profile seats in the groove and squares up under the lid, which is why an ordinary o-ring is not a substitute.
- Stops air leaks A hardened lid seal lets air into the suction side, which is what makes a pump lose prime or spit air into the basket.
- Cheap insurance Worth changing whenever the pump is opened up for other work.
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Product details
The Hayward SPX4000TS is the strainer cover T-ring for NorthStar pumps built between 1998 and 2007. It is the genuine Hayward part, molded in rubber, and it is also listed under the number O-510-0.
What a T-ring is
It is the seal between the strainer cover and the pump body, and the T shaped profile is what makes it work. The ring sits in the groove and the flat of the T squares up as the lid comes down, so it holds a seal at low pressure and under vacuum. A round o-ring of the same diameter will not do the same job.
Why they get replaced
Lid seals harden, flatten and split with heat, sun and chemistry. Once that happens air finds its way in on the suction side, and the pump starts losing prime or running with a basket full of bubbles. Clean out the groove, fit the new ring, lubricate it and the problem usually goes with it.
| Brand | Hayward |
|---|---|
| Manufacturer part number | SPX4000TS |
| Alternate part number | O-510-0 |
| UPC | 610377745154 |
| Type | Strainer cover T-ring |
| Material | Rubber |
| Fits | Hayward NorthStar pumps manufactured 1998 to 2007 |
| Shipping weight | 0.05 lb |
| Ships | Parcel |
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