
Quick overview
- Genuine Speck part Ordered as Speck 2921141210, the factory o-ring rather than a hardware store substitute.
- Seals the pump lid This is the lid seal, the gasket that has to hold vacuum for the pump to prime and stay primed.
- Two size readings in the source The listing gives the size as 135 x 5 mm in the title and as 137 mm x 5 mm in the summary, so measure your old ring before ordering.
- Speck 433 lid Called out for the Speck 433 pool pump lid.
- Wider Speck coverage Also carried among the Speck model 90, S-90, ES-90 and HydroStar 98 pump parts.
- The first thing to check on a losing prime A flattened or cracked lid o-ring pulls air and is the usual cause before anyone starts suspecting the pump.
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Product details
Speck 2921141210 is the pump lid o-ring carried as number 137. It is listed for the Speck 433 pool pump lid, and it sits among the Speck model 90, S-90, ES-90 and HydroStar 98 pump parts as well.
Check the size against yours
The source is not consistent about the dimension. The listing title states 135 x 5 mm and the product summary states 137 mm x 5 mm. Both readings are given here rather than picking one, so measure the ring coming out of your pump before you order.
Why this small part matters
The lid o-ring is the seal that lets the pump hold vacuum. When it goes flat, hardens or cracks, air gets past the lid, the pot will not stay full, and the pump loses prime. It is a common source of trouble that gets blamed on the pump itself. Fit a fresh ring, lubricate it with a silicone based pool lubricant, and the problem usually goes away.
| Brand | Speck |
|---|---|
| Manufacturer part number | 2921141210 |
| Reference number | 137 |
| Type | O-ring |
| Part type | Pool pump part |
| Size | Source gives 135 x 5 mm and also 137 mm x 5 mm |
| Fits | Speck 433 pool pump lid |
| Also listed with | Speck model 90, S-90, ES-90 and HydroStar 98 pump parts |
| Shipping weight | 0.05 lb |
| Ships | Parcel |
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