Description
SPX4000Z1, O-83, U9-374, 805-0332 O-Ring for Hayward, NorthStar Pump Union
(Quantity of 2)
Compatibility:
| Part Number | Description |
|---|---|
| SPX4000Z1 | Replacement O-ring for Hayward |
| O-83 | Replacement O-ring for Aladdin |
| U9-374 | Replacement O-ring for Sta-Rite |
| 805-0332 | Replacement O-ring for Waterway |
Also Fits:
- (13-1023-06-R) CFR Drain Gasket (2/1/1993-1/3/1996)
- (85-8263-00-R) Drain Cap With Gasket (13-1023-06) CFR Units (2/1/1993-1/3/1996)
- Advance (OV-11-332) Chlorinator O-Ring
- Flotec FPT20510 & 20515 Diffuser O-Ring
- Harmsco (930) BF96, BF144 Cartridge Filter Holding Rod O-ring
- Hayward (SPX4000Z1) Northstar Union O-ring, EcoStar Diffuser O-Ring
- Jandy (R0039500) Coupling Nut O-ring Only (2 Required)
- Jandy (R0339600) HHP/HHPU/MHP/MHPU Coupling (Set of 2 O-rings)
- Landslide For 85-8263-00 Drain Cap, Separation Tank, Sandstorm, Laser Drain Nozzle
- Landon Spin 2″ Collection O-ring
- NorthStar Resin and Brine tank 9001102 O-ring
- Pac Fab (274494) Bulkhead Valve Adapter O-ring – Elevated Base Kit – TR/NS-CH – Full Flow Valve
- Pentair: FNS, Nautilus and Plus D.E., TR100C, TR140C, Triton II & C & C-3, Minimax NT 274494 O-Ring
- Sta-Rite (U9-156) 2″ Return Hub O-ring
- Sta-Rite (U9-185) Filter O-ring
- Sta-Rite (U9-374) Diffuser O-ring – Maxi Glas/Dura Glass II/Dyna Jet
- Sta-Rite/Swimquip (35505-1424) Drain Plug O-ring
- System 3 DE Filter Swimquip MK GFV 15-20-25-33 Collection O-ring
- Waterway Self Aligning Union
Features:
- Durable Buna N Material
- Direct fit after-market replacement
- Made in USA
Note: User must install according to manufacturer specifications. All brand new parts, satisfaction guaranteed.
Product Overview
Set of 2 replacement O-rings designed for SPX4000Z1, O-83, U9-374, and 805-0332 part numbers. These precision-molded Buna N O-rings ensure a reliable seal for Hayward, NorthStar, Sta-Rite, Waterway, and other compatible pump unions and filtration systems.
Compatibility Details
- Direct fit for Hayward SPX4000Z1 and NorthStar pump union applications.
- Also replaces O-83 (Aladdin), U9-374 (Sta-Rite), and 805-0332 (Waterway).
- Compatible with a wide range of additional components including drain caps, chlorinator assemblies, diffuser O-rings, cartridge filter rods, and coupling nuts as detailed in the product listing.
- Works with systems from Pentair, Jandy, Harmsco, Flotec, Landslide, Pac Fab, and System 3 DE Filter.
Material & Performance
- Buna-N (Nitrile) Construction: Resists water, pool chemicals, and cleaning solutions for long-term reliability.
- Temperature and Pressure Ready: Ideal for use in standard pool and spa operating ranges.
- Precision-molded for consistent sealing performance and leak prevention.
Installation & Maintenance
-
- Clean all mating surfaces thoroughly before installation.
- Ensure proper seating to avoid leaks or pressure loss.




