Which pumps does this piston cup kit fit?

It fits FMC Bean 420, L0918 and L0918BCD 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.

What part number does this cross-reference to?

It is an aftermarket replacement supplied to match part 5260661; the part number is listed for identification and cross-reference only.

Piston Cup Kit Abrasive Service XNBR for FMC Bean L0918

Piston Cup Kit Abrasive Service XNBR for FMC Bean L0918 — Piston Cup aftermarket replacement part

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 420, L0918 and L0918BCD pumps and weighs about 0.34 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 420
L0918
L0918BCD

Specifications

Property	Value
Weight	0.34 lb (≈ 0.15 kg, converted)
Width	4.00 in / 10.2 cm
Height	2.50 in / 6.4 cm
Depth	7.00 in / 17.8 cm

Manufacturer technical notes

XNBR Piston Cup Kit for FMC Bean L0918 (SKU 5260661). Tungsten carbide (HVOF) + XNBR seals. 10,000PSI rated, 3x oil resistance for oily slurry service.

Verbatim from the Dongli product page on dlhddrilling.com.

Replacement / interchange

Aftermarket replacement cross-referencing 5260661.

FAQ

Which pumps does this piston cup kit fit?: It fits FMC Bean 420, L0918 and L0918BCD 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.
What part number does this cross-reference to?: It is an aftermarket replacement supplied to match part 5260661; the part number is listed for identification and cross-reference only.

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.

Need a quote or part lookup? Contact our team.