The Hayward O-Ring SPX4000Z1 is located inside the strainer housing, between the diffuser and housing to create a seal to maintain consistent pressure. If this seal is worn the pool pump can suck air in and bubbles may be visible under the strainer housing lid or air bubbles coming out of the returns in your pool.
Details:
- Hayward P/N:
- Genuine Hayward part
- Outside diameter: 2-3/4"
- Inside diameter: 2-5/16"
- Thickness: 3/16"
Fits the following pool pumps:
- Hayward TriStar VS900/950 Omini HL32900 series
- Hayward TriStar VS900/950 SP32900 series
- Hayward TriStar VS (W3)SP3200 series
- Hayward TriStar XE SP3200 series
- Hayward TriStar SP3200, SP3600 series
- Hayward TriStar Waterfall SP3600, SP3200 series
- Hayward EcoStar SP3400 series
- Hayward NorthStar SP4000 series