Piston Cup
Piston Cup 4.00 Inch Supergold Flat Back
- Catalogue reference number
- P512122
- Catalogue brand
- FMC Bean
Catalogue fields identify reference material. They do not confirm stock, OEM authorization or interchange. Verify the nameplate, original number and edition.
Catalogue model references
These are retained catalogue associations, not confirmed fitment for your equipment. Choose the model you want to review.
Catalogue specification records
| Original field | Recorded value |
|---|---|
| Weight | 1.00 lb (≈ 0.45 kg, converted) |
| Width | （无） |
| Height | （无） |
| Depth | （无） |
Catalogue description records
The Piston Cup 4.00 Inch Supergold Flat Back is a flexible piston sealing element for the fluid end of reciprocating pumps. Fitted to the piston, it maintains the seal against the cylinder liner bore as the piston reciprocates, so it is a routine wear part that affects volumetric efficiency. This 4.00 inch cup uses a flat-back profile and fits FMC Bean pump models M1432 and M1632. It is an aftermarket replacement cross-referenced to FMC Bean part P512122.
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.
Catalogue question records
Original catalogue questions are retained. Fitment and availability need technical review.
- Which pumps does this piston cup fit?
- It fits FMC Bean pump models M1432 and M1632.
- What is the cross-reference part number?
- This is an aftermarket replacement cross-referenced to FMC Bean part P512122. The brand and part number are used for identification and comparison only and do not imply OEM manufacture.
- What does the piston cup do in the pump?
- It is the flexible sealing element on the piston in the fluid end. It seals against the cylinder liner bore during each stroke, so wear here directly affects the pump's volumetric efficiency.
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