Oil Seal Keyed Pinion Shaft Only

This is the oil seal for the keyed pinion shaft in the power end, fitted where the pinion shaft passes through the gear housing. It rides on the shaft to retain lubricating oil inside the power end and to keep dirt and moisture out. It fits Myers D65, D65-20, DP80, DP80-20, DP85, DP85-20, E54, E54-30, E80 and E80-20V pumps. This is an aftermarket replacement that cross-references Myers part number 05710A017K; the brand and number are shown for identification only and do not indicate original-manufacturer supply.
What it is
An oil seal retains lubricating oil in the power end and excludes contaminants where a shaft or rod passes through the housing.
Pump compatibility
Specifications
| Property | Value |
|---|---|
| Weight | 0.05 lb (≈ 0.02 kg, converted) |
| Width | 6.4 cm |
| Height | 6.4 cm |
| Depth | 1.5 cm |
Manufacturer technical notes
Oil Seal Keyed Pinion Shaft Only (SKU 05710A017K), forged from ASTM D2000-20 Nitrile Rubber (NBR) via compression molding. Operates at -30°C to 120°C, dynamic pressure ≤3000psi, API 682 compliant. Compatible with mud pump keyed pinion shafts, abrasion-resistant lifespan ≥5000 hours, matches alumina ceramic liners. Salt spray test 500h corrosion-free.
Verbatim from the Dongli product page on dlhddrilling.com.
Replacement / interchange
Aftermarket replacement cross-referencing Myers 05710A017K.
FAQ
- Which pumps does this oil seal fit?
- It fits Myers D65, D65-20, DP80, DP80-20, DP85, DP85-20, E54, E54-30, E80 and E80-20V pumps.
- What is this part for?
- It is the oil seal for the keyed pinion shaft. It seals where the pinion shaft exits the housing, retaining the power-end lubricating oil and excluding contaminants.
- What part number does it cross-reference?
- It cross-references Myers part number 05710A017K as an aftermarket replacement, listed for identification and comparison only.
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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