Which pumps does this piston cup fit?

It is listed to fit FMC Bean L1118SC and L1618SC pumps.

What does this piston cup do?

A piston cup is the flexible sealing element on the piston in the fluid end; it seals against the cylinder liner bore as the piston reciprocates, so its condition directly affects the pump's volumetric efficiency. This one is a preformed style cup rated in the name for abrasive service.

Is there an interchange part number?

This is an aftermarket replacement that cross-references SKU P513766. The part number is given for identification and cross-reference only and does not indicate OEM manufacture.

Piston Cup 2-1/4 Inch Abrasive Service SuperGold Preformed

Piston Cup 2-1/4 Inch Abrasive Service SuperGold Preformed — Piston Cup aftermarket replacement part

This is a 2-1/4 inch SuperGold piston cup for abrasive service in a preformed style, the flexible sealing element fitted to the piston in the fluid end of a reciprocating pump. It seals against the cylinder liner bore as the piston reciprocates and is a routine wear part. It is sized for FMC Bean L1118SC and L1618SC pumps, and the "abrasive service" designation in the name indicates it is intended for pumping abrasive fluids.

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

L1118SC
L1618SC

Specifications

Property	Value
Weight	0.09 lb (≈ 0.04 kg, converted)
Width	2.25 in / 5.7 cm
Height	2.25 in / 5.7 cm
Depth	1.50 in / 3.8 cm

Manufacturer technical notes

SuperGold Preformed Piston Cup (2-1/4" Abrasive Service), ASTM D2000-20 FKM fluorocarbon rubber compound with nitrided fiber reinforcement, API 7K compliant for mud pumps, pressure resistance ≥6000psi, 50% enhanced abrasion resistance, operating temp -40℃~220℃.

Verbatim from the Dongli product page on dlhddrilling.com.

Replacement / interchange

Aftermarket replacement cross-referencing P513766.

FAQ

Which pumps does this piston cup fit?: It is listed to fit FMC Bean L1118SC and L1618SC pumps.
What does this piston cup do?: A piston cup is the flexible sealing element on the piston in the fluid end; it seals against the cylinder liner bore as the piston reciprocates, so its condition directly affects the pump's volumetric efficiency. This one is a preformed style cup rated in the name for abrasive service.
Is there an interchange part number?: This is an aftermarket replacement that cross-references SKU P513766. The part number is given for identification and cross-reference only and does not indicate OEM manufacture.

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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