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.

Piston Cup 4.00 Inch Supergold Flat Back

Piston Cup 4.00 Inch Supergold Flat Back — Piston Cup aftermarket replacement part

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.

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

M1432
M1632

Specifications

Property	Value
Weight	1.00 lb (≈ 0.45 kg, converted)
Width	（无）
Height	（无）
Depth	（无）

Manufacturer technical notes

Piston Cup 4.00 Inch Supergold Flat Back (SKU:P512122) API 7K-certified HNBR rubber with Kevlar reinforcement (tensile strength ≥28MPa), isostatic molding process (density 1.35g/cm³±0.02), compatible with oilfield mud pumps under high pressure (≥35MPa), corrosion-resistant (ASTM D2240 hardness 90±5 Shore A), operating temperature range -40℃~150℃。

Verbatim from the Dongli product page on dlhddrilling.com.

Replacement / interchange

Aftermarket replacement cross-referencing FMC Bean P512122.

FAQ

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.

Related parts

See all Piston Cup →

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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