Sta-Rite U9-362 Buna-N union o-ring for 1-1/2 inch and 2 inch unionsSta-Rite Union O-Ring, 1-1/2 inch and 2 inch, U9-362 In stock$999
Sta-Rite U9-362 Buna-N union o-ring for 1-1/2 inch and 2 inch unions

Sta-Rite Union O-Ring, 1-1/2 inch and 2 inch, U9-362

Ask a questionMPN U9-362
$999
In stock

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Quick overview

  • Buna-N, 70 shore Standard nitrile union o-ring in a 70 durometer.
  • Two union sizes Listed for both 1-1/2 inch and 2 inch unions.
  • System:3 filters Used on the Sta-Rite System:3 Modular Media SM cartridge filter and the System:3 SD series DE filter.
  • IntelliPro pumps Also listed as the union o-ring on the IntelliPro pump.
  • FullFloXF backwash valve Carried as the union o-ring for the Pentair FullFloXF backwash valve.
  • Cheap insurance A union that drips or sucks air is nearly always a tired o-ring, and it is worth changing whenever a union is opened.
Full description and specifications ↓

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Product details

The Sta-Rite U9-362 is a Buna-N union o-ring in a 70 shore durometer, listed for both 1-1/2 inch and 2 inch unions.

Where it is used

The same o-ring turns up across a wide range of equipment: the Sta-Rite System:3 Modular Media SM series cartridge filter, the System:3 SD series DE filter, the IntelliPro pump, and the Pentair FullFloXF backwash valve. Anywhere a union collar screws down on this size of connection, this is the seal that does the work.

Why it matters

On the discharge side a tired union o-ring drips. On the suction side it does something worse: it lets air in, so the pump loses prime and the basket fills with air instead of water. Either symptom at a union points at the o-ring first.

Fitting it

Wipe the groove clean, lubricate the new o-ring, and tighten the union collar by hand. Union collars are not meant to be pulled up with a wrench, and overtightening cracks the collar without improving the seal.

Specifications
Brand Sta-Rite
Manufacturer part number U9-362
UPC 788379850951
Part Type Filter Valves Part
Type Union o-ring
Material Buna-N
Durometer 70 shore
Union size 1-1/2 inch and 2 inch
Fits Sta-Rite System:3 Modular Media SM series cartridge filter, Sta-Rite System:3 SD series DE filter, IntelliPro pump, Pentair FullFloXF backwash valve
Shipping weight 0.02 lb
Ships Parcel

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Customer reviews

Questions and answers

What people ask about this product, answered by our pool techs.

Does this fit a 1-1/2 inch or a 2 inch union?
It is listed for both 1-1/2 inch and 2 inch unions.
What is it made of?
Buna-N nitrile at a 70 shore durometer, the standard material for a pool union o-ring.
Which equipment uses it?
The Sta-Rite System:3 Modular Media SM cartridge filter, the System:3 SD series DE filter, the IntelliPro pump and the Pentair FullFloXF backwash valve.
My pump is losing prime at the union, is this the cause?
A union o-ring that has hardened or taken a set will let air in on the suction side and lose prime. Replace the o-ring, lubricate it, and hand tighten the union collar rather than using a wrench.
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