SuperPro Universal O-Ring 1/2" ID In stock$606
Quick overview
- Universal size A generic o-ring rather than a single model part, so one size covers drain plugs and a range of small fittings.
- Measured size 1/2 inch inside diameter with a 3/32 inch cross section, the two numbers to check against the ring you are replacing.
- Wide cross reference Sold under P40, O-39-9 and U9-359, and it carries a long list of substitute numbers from other suppliers.
- Common failure point A flattened or cracked drain plug o-ring is one of the most frequent causes of a small persistent leak at the pad.
- Buy a spare Cheap enough to keep on the shelf, and the part most likely to be missing when a plug goes back in mid season.
- Use silicone lube Silicone based lubricant is the correct dressing for pool o-rings, petroleum grease swells and breaks rubber down.
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Product details
The SuperPro O-39-9 is a universal o-ring with a 1/2 inch inside diameter and a 3/32 inch cross section. It is not tied to one piece of equipment, it is a stock size that shows up on drain plugs and small fittings across pumps, filters and booster pumps.
Buying by measurement, not by model
Because this is a generic size, the right way to order it is to measure. Take the inside diameter of the old ring across the hole, then the thickness of the rubber. If those come to 1/2 inch and 3/32 inch, this is the ring. The same part is cataloged as P40, O-39-9 and U9-359, and a long list of substitute numbers from other suppliers points at the same size.
Fitting it
Clean the groove before the new ring goes in, and dress it with a silicone based o-ring lubricant. Petroleum grease is the common mistake here, it swells the rubber and shortens the life of the ring. A drain plug that has started weeping is usually the ring rather than the plug, so this is worth trying before replacing anything larger.
| Brand | SuperPro |
|---|---|
| Manufacturer part number | O-39-9 |
| Manufacturer part numbers | P40, O-39-9, U9-359 |
| UPC | 601402111785 |
| Type | Universal o-ring |
| Inside diameter | 1/2" |
| Cross section | 3/32" |
| Substitute part numbers | 47011200, 171051005, 205104, 3081001, LLE45, 1137, 1269009, 29113, 8050111, P62112, 273011, 11206, 8050112, 201010, 192115, U9359, 510031, U9158, 6020006, 47011200R, 39960148, LE45, 017437, 3262-08, 90-423-5112, POL-201-3293 |
| Shipping weight | 0.02 lb |
| Ships | Parcel |
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