SuperPro O-39-9 universal o-ring, 1/2 inch inside diameterSuperPro Universal O-Ring 1/2" ID, O-39-9 In stock$699
SuperPro O-39-9 universal o-ring, 1/2 inch inside diameter
Shop all Aladdin

SuperPro Universal O-Ring 1/2" ID, O-39-9

Ask a questionMPN O-39-9
$699
In stock
Get volume pricing Request a quote

30 day returns · Easy, with prepaid labels provided

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.
Full description and specifications ↓

Need a hand?

Bilingual support from pool professionals.
(888) 751-8084CallChat with a techChatEmail usEmail

Send us a message

A pool professional will get back to you, usually the same business day.

About SuperPro Universal O-Ring 1/2" ID, O-39-9, SKU ALA-601-4724. We will include it with your message.

We use your details to answer this message and nothing else.

Frequently bought together

Current item SuperPro Universal O-Ring 1/2" ID, O-39-9
Aladdin

SuperPro Universal O-Ring 1/2" ID, O-39-9

$699
SuperPro Valve Seat Gasket 5 Spoke (5-5/16"), O-176A-9
Aladdin

SuperPro Valve Seat Gasket 5 Spoke (5-5/16"), O-176A-9

$799
SuperPro Tank O-Ring (Generic) for Select Hayward Filters, O-429-9
Aladdin

SuperPro Tank O-Ring (Generic) for Select Hayward Filters, O-429-9

$1499
SuperPro Generic 2" Diverter Gasket, G-417-9
Aladdin

SuperPro Generic 2" Diverter Gasket, G-417-9

$1299
SuperPro Generic Tank O-Ring 20-7/8" ID (7/16" Thick), O-497-9
Aladdin

SuperPro Generic Tank O-Ring 20-7/8" ID (7/16" Thick), O-497-9

$2199
SuperPro 18" Tank O-Ring, O-184-9
Aladdin

SuperPro 18" Tank O-Ring, O-184-9

$1599
Super-Pro O-Ring, U9-228A/CX900F, O-240-9
Aladdin

Super-Pro O-Ring, U9-228A/CX900F, O-240-9

$1199
Subtotal

Similar products

Other products people compare with this one.

SuperPro O-231-9 o-ring, 5-1/8 inch inside diameter SuperPro O-Ring O-231-9$399 SuperPro O-130-9 valve cap shaft o-ring SuperPro Valve Cap Shaft O-Ring, O-130-9$399 SuperPro O-263 generic o-ring, 6-3/4 inch inside diameter SuperPro Generic O-Ring, 6-3/4 Inch, O-263$599 SuperPro O-367-9 valve cover o-ring, 5-5/8 inch inside diameter SuperPro O-Ring, 5-5/8" ID, O-367-9$699 SuperPro O-47-9 cover O-Ring, 9/16 inch inside diameter SuperPro Cover O-Ring, O-47-9$399 SuperPro Diffuser O-Ring for Pentair Pump 355331 | O-421-9 SuperPro Diffuser O-Ring for Pentair Pump 355331 | O-421-9$399 SuperPro O-69-9 o-ring, 1 in. inside diameter by 1/8 in. thick SuperPro 1" O-Ring, O-69-9$399 SuperPro Cover Strainer For Trap O-RING SPX3000S U9-375 | O-12-9 SuperPro Cover Strainer For Trap O-RING SPX3000S U9-375 | O-12-9$699 SuperPro 174704 O-RING TANK | O-99P-9 SuperPro 174704 O-RING TANK | O-99P-9$799 Hayward DEX2400Z5 outlet elbow o-ring, 2-3/16 in. inside diameter Hayward Outlet Elbow O-Ring, 2-3/16" ID, DEX2400Z5$399
Hayward SX200Z3 OEM bulkhead o-ring, 2-1/2 in. inside diameter Hayward OEM Bulkhead O-Ring, SX200Z3$799 Jandy R0442500 outlet tube o-ring for DEL48 and DEL60 DE filters Jandy Outlet Tube O-Ring, R0442500$399 Hayward SP1022C 1-1/2 in. white threaded drain plug with o-ring Hayward 1-1/2" Plug with O-Ring, SP1022C$599 Pentair 191474Z drain plug o-ring for Clean and Clear Plus filters Pentair Genuine OEM Drain Plug O-Ring for Clean and Clear Plus, 191474Z$599 Pentair 86006900 bulkhead o-ring, upper and lower Pentair O-Ring, Bulkhead Upper and Lower, 86006900$999 Pentair 192323 genuine OEM standpipe o-ring gasket Pentair Genuine OEM Standpipe O-Ring, 192323$799 Pentair 071426Z rubber union o-ring Pentair Genuine OEM Replacement Union O-Ring, 071426Z$699 Pentair 274495 white O-ring, 3/16 inch by 2 5/8 inch Pentair Genuine OEM O-Ring 3/16" x 2 5/8", White, 274495$599 Pentair 51005000 drain cap fitting o-ring Pentair O-Ring Drain Cap Fitting, 51005000$799 Jacuzzi 39254701R plastic air bleeder valve with o-ring for pool filters Jacuzzi Air Bleeder Valve with O-Ring, 39254701R$999

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.

Specifications
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

Request a quote

Need a volume price, a freight quote, or pricing in writing before you order? We reply the same business day.

Request a quote

Customer reviews

More from Aladdin

Aladdin Magic Lube 630 PTFE o-ring lubricant, 1 oz. tube Aladdin Magic Lube 1 oz. O-Ring Lubricant$699 Aladdin GO-KIT32-9 seal and gasket kit for Pentair WhisperFlo and IntelliFlo pumps Aladdin Seal & Gasket Kit for Pentair WhisperFlo & IntelliFlo Pool Pumps, GO-KIT32-9$3499 Aladdin GO-KIT 71 seal kit for the old style Polaris PB4-60 booster pump Aladdin GO-KIT 71 Seal Kit for Polaris PB4-60 Booster Pump$1699 Aladdin Magic Lube 631 PTFE o-ring lubricant, 5 oz. tube Aladdin Magic Lube 5 oz. O-Ring Lubricant$1499 SuperPro O-176A-9 five spoke valve seat gasket, 5-5/16 in., for Hayward Vari-Flo valves SuperPro Valve Seat Gasket 5 Spoke (5-5/16"), O-176A-9$799 Aladdin Equipment Co. GO-KIT3-9 rebuild kit for the Hayward Super Pump: housing gasket, diffuser gasket, lid gasket and shaft seal Aladdin Equipment Co. Super Pump Rebuild Kit, GO-KIT3-9$1999 SuperPro GO-KIT2-9 rebuild kit for Hayward Super II pump: seals and gaskets SuperPro Super II Pump Rebuild Kit GO-KIT2-9$4499 SuperPro O-429-9 generic tank o-ring for Hayward filters, replaces DEX2400K SuperPro Tank O-Ring (Generic) for Select Hayward Filters, O-429-9$1499 Aladdin GO-KIT5-9 pump rebuild kit for Pentair PacFab Challenger pumps, shaft seal and o-rings Aladdin Go-Kit 5 Pump Rebuild Kit for Pentair PacFab Challenger Pumps, GO-KIT5-9$2499 SuperPro GO-KIT70 2 in. valve rebuild kit for Pentair PacFab multiport valves SuperPro 2 in. Valve Rebuild Kit, GO-KIT70$1999
SuperPro B-37 generic replacement skimmer basket for the S-10 Admiral skimmer SuperPro S-10 Admiral Skimmer Basket (Generic)$1999 SuperPro 271148 diverter spider gasket for 2 in. Pentair PacFab multiport valve SuperPro Generic 2" Diverter Gasket, G-417-9$1299 Aladdin APCKIT39 SP715 multiport valve repair kit, 2 inch, with spring Aladdin SP715 Multiport Valve Repair Kit 2" with Spring, APCKIT39$4699 Aladdin O-411-9 replacement o-ring, 5-1/4 in. inside diameter Aladdin O-Ring, 5-1/4" ID, O-411-9$399 Super-Pro GO-KIT3V-9 Viton gasket and o-ring seal kit for the Hayward Super Pump SuperPro Super Pump Seal Kit with Viton Seals, GO-KIT3V-9$3899 SuperPro O-497-9 generic tank o-ring, 20-7/8 inch ID by 7/16 inch thick SuperPro Generic Tank O-Ring 20-7/8" ID (7/16" Thick), O-497-9$2199 Aladdin Magic Lube II 5 oz tube of silicone lubricant and sealer, part 651 Aladdin Magic Lube II 5 oz$2399 SuperPro GO-KIT14-9 seal kit for Jacuzzi Magnum pumps SuperPro Jacuzzi Magnum Pump Seal Kit, GO-KIT14-9$3099 SuperPro O-184-9 18 inch tank o-ring for Pentair PacFab Nautilus DE filters SuperPro 18" Tank O-Ring, O-184-9$1599 SuperPro GO-KIT6-9 rebuild kit for Sta-Rite Max-E-Glas and Dura-Glas pumps SuperPro Max-E-Glas/Dura-Glas Pump Rebuild Kit, GO-KIT6-9$2399

Questions and answers

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

What size is this o-ring?
1/2 inch inside diameter with a 3/32 inch cross section. Measure the ring you are replacing across the inside of the circle, then measure the thickness of the rubber itself.
Is this made for one specific pump or filter?
No. It is a generic size that turns up in the parts breakdowns for a wide range of pumps, filters and booster pumps. Match it on measurement rather than on model name.
Why are there so many part numbers listed?
The same size ring is cataloged by several suppliers under their own numbers. P40, O-39-9 and U9-359 are the manufacturer numbers, and the substitute list covers the other numbers it is sold under.
Should I grease it before fitting?
Use a silicone based o-ring lubricant. Petroleum based grease causes the rubber to swell and break down, which shortens the life of the ring and can make the leak worse.
Ask your own question