Aqua Terra Backyard
American Products 39006000 Ultra-Flow Seal Plate O-Ring | Ultra-Flo Pump Gasket
American Products 39006000 Ultra-Flow Seal Plate O-Ring | Ultra-Flo Pump Gasket
American Products 39006000 Ultra-Flow Seal Plate O-Ring
The American Products 39006000 Ultra-Flow Seal Plate O-Ring is the large replacement pump gasket used on compatible American Products Ultra-Flow / Ultra-Flo pool pumps. This O-ring seals the connection between the pump seal plate and volute housing, helping prevent water leaks after the pump is reassembled.
If you are replacing the seal plate, shaft seal, diffuser, or rebuilding an older American Products Ultra-Flow pump, the 39006000 O-ring should be replaced at the same time to help create a clean, reliable seal.
Why Buy the American Products 39006000 O-Ring?
- Large seal plate O-ring for compatible American Products Ultra-Flow / Ultra-Flo pumps
- Seals the seal plate to the volute housing to help prevent pump leaks
- Recommended during seal plate, shaft seal, or motor repairs
- Common repair part for older Anthony Pools / American Products SuperFlow pump setups
- Helps avoid leaks after pump reassembly
Product Details
| Brand / Pump Family | American Products Ultra-Flow / Ultra-Flo |
| Part Number | 39006000 |
| Alternate / Cross Reference | 39006000Z, O-240, V26-354S |
| Product Type | Seal Plate O-Ring / Volute O-Ring / Large Pump Housing Gasket |
| Application | Compatible American Products Ultra-Flow / Ultra-Flo pool pumps |
What Does the 39006000 O-Ring Do?
The 39006000 O-ring creates the main seal between the pump seal plate and the volute housing. When this O-ring becomes flattened, cracked, stretched, dry, or pinched, the pump can leak from the main housing connection after service.
This is one of the most important gaskets to replace when the pump is already apart. Reusing an old compressed O-ring can cause leaks even if the new motor, seal plate, diffuser, or shaft seal was installed correctly.
ATB Repair Tip
If you are replacing the seal plate on an American Products Ultra-Flow pump, replace the 39006000 seal plate O-ring and the shaft seal at the same time. It is much easier to replace these parts while the pump is open than to take everything apart again for a leak.
Common Symptoms of a Bad Seal Plate O-Ring
- Water leaking between the seal plate and pump housing
- Drips from the main pump body after reassembly
- O-ring is flattened, brittle, cracked, or stretched
- Pump loses prime after service
- Leak appears after replacing the motor, shaft seal, or seal plate
Common Repair Pairing
The American Products 39006000 Ultra-Flow O-Ring is commonly replaced with other Ultra-Flo pump rebuild parts, especially when servicing an older American Products / Anthony Pools SuperFlow style pump.
- V38-131 seal plate kit
- PS-1000 standard shaft seal
- PS-3865 heavy-duty shaft seal option
- V38-132 diffuser for 1/2 HP to 1-1/2 HP Ultra-Flo pumps
- V38-133 diffuser for 2 HP to 3 HP Ultra-Flo pumps
- V38-129S diffuser O-ring
Important: This listing is for the large seal plate / volute O-ring only. It does not include the seal plate, shaft seal, diffuser, diffuser O-ring, impeller, motor, or pump housing unless those parts are purchased separately.
Fitment Notes
The 39006000 O-ring is used on American Products Ultra-Flow / Ultra-Flo pump assemblies and is commonly referenced as the Ultra-Flow seal plate O-ring, volute O-ring, or large pump housing gasket. It may also be cross-referenced as 39006000Z, O-240, or V26-354S.
This is not the same large gasket used on newer Pentair SuperFlo pumps. If your pump label says Anthony Pools SuperFlow High Performance Pumps or your pump matches the older American Products Ultra-Flo style, this is the correct large housing O-ring family.
Frequently Asked Questions
What is the American Products 39006000 used for?
The 39006000 is the large seal plate / volute O-ring used on compatible American Products Ultra-Flow and Ultra-Flo pool pumps. It seals the pump housing connection between the seal plate and volute.
Is 39006000 the large gasket for the pump?
Yes. This is the large O-ring that seals the seal plate to the pump housing on compatible Ultra-Flow pump assemblies.
Is 39006000 the same as 39006000Z?
Yes. 39006000 and 39006000Z are commonly used for the same Ultra-Flow seal plate O-ring replacement.
Should I replace this when changing the seal plate?
Yes. Replacing the 39006000 O-ring is recommended whenever the seal plate or shaft seal is removed. An old O-ring may not reseal correctly after the pump is taken apart.
Does this fit the newer Pentair SuperFlo pump?
No. This O-ring is for the older American Products Ultra-Flow / Ultra-Flo pump family, not the newer Pentair SuperFlo pump.
Does this include the shaft seal?
No. This listing is for the seal plate / volute O-ring only. The shaft seal is sold separately.
Order American Products 39006000 from Aqua Terra Backyard
At Aqua Terra Backyard, we help pool owners and service professionals find the correct repair parts for older and discontinued pump systems. The American Products 39006000 Ultra-Flow Seal Plate O-Ring is the correct large housing O-ring for compatible Ultra-Flo pump repairs and should be replaced whenever the pump seal plate is removed.
Need help matching pump parts? Send us a photo of your pump label, seal plate, diffuser, or existing O-ring and we can help confirm the correct repair path before you order.
