Product Information
Description
Aladdin APCO2372 Pump and Valve Adapter O-Ring
OEM-spec replacement for Hayward SPX4000Z1, Pentair 274494, and Sta-Rite U9-374.
The Aladdin APCO2372 is a Buna-N adapter O-ring that seals 2 in bulkhead unions, pump diffusers, and valve adapters across the Hayward, Pentair, Sta-Rite, Jacuzzi, Harmsco, and Advance lineups. It measures 2.35 in ID by 2.77 in OD with a 0.21 in cross section, so it drops straight into any port spec'd for SPX4000Z1, 274494, or U9-374 without trimming. Aladdin manufactures it to OEM tolerances, and PST stocks it as PST-APCO2372 for same-day shipping.
| Manufacturer | Aladdin Equipment Company |
|---|---|
| MPN | APCO2372 |
| PST SKU | PST-APCO2372 |
| Type | Pump and valve adapter O-ring |
| Material | Buna-N (Nitrile) |
| Inside Diameter | 2.35 in |
| Outside Diameter | 2.77 in |
| Cross Section | 0.21 in |
| Color | Black |
| Replaces (Hayward) | SPX4000Z1, SP4000Z1 |
| Replaces (Pentair / PacFab) | 274494 |
| Replaces (Sta-Rite / SwimQuip) | U9-374, U9-156, U9-185, 35505-1424 |
| Replaces (Jacuzzi) | 13102306R |
| Replaces (Advance) | OV11332 |
| Replaces (Harmsco) | 930 |
| Sold As | Each |
| Warranty | Manufacturer defect coverage |
Which pumps and filters does this O-ring fit?
Confirmed fits include Hayward Super Pump and Super II diffusers (SPX4000Z1), Pentair FullFloXF and Tagelus valve adapters (274494), Sta-Rite System:3 drain adapters (35505-1424), Pentair FNS, Nautilus, Triton II, and Triton C sand filters, and Pentair MiniMax NT pool and spa heater unions. It also covers Sta-Rite U9-374 and SwimQuip pump applications.
What size is the O-ring?
2.35 in inside diameter, 2.77 in outside diameter, 0.21 in cross section. Standard Buna-N (Nitrile) compound rated for pool water, chlorine, and bromine service.
Can I install it myself?
Yes. Power down the pump or close the valve isolation valves, lubricate the new O-ring with a silicone-based pool gasket lube (never petroleum jelly), seat it in the groove, and reassemble. No tools beyond a standard wrench for the union nut are needed.
Additional Info
| Category | Parts Pool Parts Pool Pump Parts |
| SKU | PST-APCO2372 |
| MPN | APCO2372 |
| Manufacturer | Aladdin |
| Weight | 0.0 lb |
Let customers speak for us
Easy to order - received the next day!
Beautiful!!
The valve fit perfectly and works great.
Fast shipping and great price!
Does what a small weed- eater would do it minutes versus an hour
Great product does exactly what was advertised to do.
I ordered the wrong part. Customer service was very helpful. I returned it and within the week my credit card was credited back. Excellent customer service policy.
There was a delay in shipping due to postal service. They sent another part right away.
New model 59303 works great, but too bad the last generation Balboa WiFi module 50350 became un-useable.
Exactly as advertised and super fast shipping and delivery
