L1618 SCDI NITRH SGOLD Piston Cup 440 SS
This is the L1618 SCDI NITRH SGOLD piston cup, designation 440 SS, a fluid-end sealing part for L1618-series reciprocating pumps. The piston cup is the flexible sealing element fitted to the piston; it maintains the seal against the cylinder liner bore as the piston reciprocates, so wear here directly affects volumetric efficiency. It is supplied under part number P546348 and fits the L1618 and L1618SC pumps.
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
- L1618
- L1618SC
Specifications
| Property | Value |
|---|---|
| Weight | 708.00 lb (≈ 321.14 kg, converted) |
Manufacturer technical notes
SCDI Nitrided RH SuperGold Piston Cup (SKU P546348). 440C steel + WC coating. HRC62, 12,000PSI, 10x wear life, for high-pressure SCDI service.
Verbatim from the Dongli product page on dlhddrilling.com.
Replacement / interchange
Aftermarket replacement cross-referencing P546348.
FAQ
- Which pumps does this piston cup fit?
- It is listed to fit the L1618 and L1618SC pumps.
- What does a piston cup do?
- It is the flexible sealing element on the piston that seals against the cylinder liner bore as the piston reciprocates; because it is a primary wear surface, it is a routine fluid-end service item.
- What reference part number does it replace?
- It is an aftermarket replacement carrying part number P546348, supplied to match the original component's form and fit.
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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