Hayward SPX4000Z1 union o-ring, 2-3/8 inch inside diameter, for TriStar and Northstar pumpsHayward O-Ring, 2-3/8" ID, SPX4000Z1 In stock$2299
Hayward SPX4000Z1 union o-ring, 2-3/8 inch inside diameter, for TriStar and Northstar pumps
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Hayward O-Ring, 2-3/8" ID, SPX4000Z1

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$2299
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Quick overview

  • Genuine Hayward Factory o-ring SPX4000Z1, also referenced as O-83.
  • Union seal Seals the pump union connection on Hayward TriStar pumps.
  • Measured size 2-3/8 inch inside diameter with a 3/16 inch cord thickness.
  • Rubber construction Molded rubber, sized to the union groove rather than cut from stock.
  • TriStar and Northstar Used on TriStar SP3200 and SP3200EE and on Northstar pumps.
  • Stops a union drip A flattened or hardened o-ring is the usual reason a union will not seal.
Full description and specifications ↓

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Product details

The Hayward SPX4000Z1 is the union o-ring for TriStar pumps, also carried under the reference O-83. It measures 2-3/8 inches on the inside diameter with a 3/16 inch cord thickness, and it is molded rubber.

Where it goes

It seats in the union groove between the pump port and the union nut, on Hayward TriStar models SP3200 and SP3200EE and on Northstar pumps. Both the suction and discharge unions take the same o-ring, so a pump that has been apart usually wants two.

When to change it

Union o-rings take heat every time the pump runs and eventually go hard, flatten into the groove, or crack. Once that happens the union will keep weeping no matter how hard the nut is tightened, and overtightening only cracks the nut. Fit a fresh o-ring with a light coat of silicone lubricant and hand tighten the union.

Specifications
Brand Hayward
Manufacturer part number SPX4000Z1
Also known as O-83
UPC 610377563666
Type Union o-ring
Material Rubber
Inside diameter 2-3/8"
Cord thickness 3/16"
Fits Hayward TriStar SP3200 and SP3200EE, Hayward Northstar pumps
Shipping weight 0.02 lb
Ships Parcel

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Questions and answers

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

What size is this o-ring?
2-3/8 inch inside diameter with a 3/16 inch cord thickness.
Is this the same as an O-83?
Yes. Hayward SPX4000Z1 is the union o-ring also referenced as O-83.
Which pumps use it?
It is the union o-ring for Hayward TriStar pumps, including SP3200 and SP3200EE, and for Northstar pumps.
Should I lubricate it?
A thin film of pool rated silicone lubricant helps the o-ring seat evenly and keeps it from grabbing and twisting as the union nut is turned.
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