Cylinder Cover Back Up Ring
This is the Cylinder Cover Back Up Ring for the SC-35 pump. As part of the cylinder cover assembly, it closes and seals the outer end of the fluid-end cylinder, supporting pressure retention and access for liner and piston service. It is supplied to fit the SC-35 model.
What it is
A cylinder cover closes the outer end of the fluid-end cylinder, retaining pressure and providing access for liner and piston service.
Pump compatibility
Specifications
| Property | Value |
|---|---|
| Weight | 0.00 lb (≈ 0.00 kg, converted) |
Manufacturer technical notes
Cylinder Cover Back-Up Ring (Model: SC-35), manufactured from PTFE via compression molding with compressive strength ≥80MPa and operational temperature range -40°C to 200°C, compatible with Myers Aplex SC-35 mud pump cylinder head sealing systems. API 7K certified to prevent O-ring extrusion under high pressure (≤3500psi), extending seal life by over 30%.
Verbatim from the Dongli product page on dlhddrilling.com.
Replacement / interchange
Aftermarket replacement cross-referencing 18753A009.
FAQ
- Which pump does this part fit?
- It is supplied to fit the SC-35 model.
- What is this part used for?
- It is a back-up ring used with the cylinder cover, which closes the outer end of the fluid-end cylinder to retain pressure and provide access for liner and piston service.
- What is the reference part number?
- It is supplied as an aftermarket replacement under part number 18753A009 for the SC-35 pump.
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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