Piston Cup Kit Abrasive Service XNBR for FMC Bean W1122
This is an XNBR piston cup kit (abrasive service) for the fluid end of FMC Bean reciprocating pumps. The piston cup is the flexible sealing element fitted to the piston; it seals against the cylinder liner bore as the piston reciprocates and is a routine wear item that directly affects volumetric efficiency. The "abrasive service" designation indicates the cup is intended for duty handling abrasive or solids-laden fluids. It fits BEAN 435, W1122 and W1122BCD pumps and weighs about 0.46 lb.
What it is
A piston cup is the flexible sealing element fitted to the piston in the fluid end. It maintains the seal against the cylinder liner bore as the piston reciprocates, so wear here directly affects volumetric efficiency.
Pump compatibility
- BEAN 435
- W1122
- W1122BCD
Specifications
| Property | Value |
|---|---|
| Weight | 0.46 lb (≈ 0.21 kg, converted) |
| Width | 7.00 in / 17.8 cm |
| Height | 4.00 in / 10.2 cm |
| Depth | 2.50 in / 6.4 cm |
Replacement / interchange
Aftermarket replacement cross-referencing FMC Bean 5260644 (Temporarily Out of Stock).
FAQ
- Which pumps does this piston cup kit fit?
- It fits FMC Bean 435, W1122 and W1122BCD reciprocating pumps.
- What does "abrasive service" mean here?
- It indicates the cup is configured for duty handling abrasive or solids-laden fluids, where the sealing element typically wears faster than in clean-fluid service.
- Is this an OEM part?
- This is an aftermarket replacement supplied to match FMC Bean part 5260644; the brand and part number are listed for identification and cross-reference only, not to claim OEM manufacture.
Related parts
All brand names, model numbers and part numbers are used for identification and cross-reference only and do not imply original-equipment manufacture. This is an aftermarket replacement part.
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