O-Ring Cover Cap 2-228-90 Nitrile
The O-Ring Cover Cap 2-228-90 Nitrile is an elastomeric sealing ring used at the cover cap of Kerr KM-3250PT, KMX-3300SHPT and T30M pumps, where it closes the joint to prevent leakage of fluid or pressure. The name follows the standard convention: 2-228 is the ring size, 90 is the nominal durometer hardness, and Nitrile is the elastomer. It is an aftermarket replacement that interchanges with Kerr part Q5450HP-38.
What it is
An O-ring is an elastomeric static or dynamic seal that closes a joint or bore against leakage of fluid or pressure.
Pump compatibility
- KM-3250PT
- KMX-3300SHPT
- T30M
Specifications
| Property | Value |
|---|---|
| Weight | 0.00 lb (≈ 0.00 kg, converted) |
| Width | （无） |
| Height | （无） |
| Depth | （无） |
Manufacturer technical notes
O-Ring Cover Cap 2-228-90 Nitrile (SKU:Q5450HP-38), sulfur-cured NBR (ASTM D2000-01 7BG910), Shore A90±3 hardness, pressure-resistant ≥25MPa, operating temp -40°C~120°C for API 7K mud pump sealing systems. Salt spray tested >1200hrs corrosion-free, AS568-228 compliant.
Verbatim from the Dongli product page on dlhddrilling.com.
Replacement / interchange
Aftermarket replacement cross-referencing Kerr Q5450HP-38.
FAQ
- Which pumps does this cover cap O-ring fit?
- It fits the Kerr KM-3250PT, KMX-3300SHPT and T30M pump models.
- What do 2-228 and 90 mean in the name?
- 2-228 is the standard O-ring size designation and 90 is the nominal durometer hardness; Nitrile is the elastomer material named for the ring.
- What part number does it replace?
- This aftermarket O-ring interchanges with Kerr part number Q5450HP-38, listed for identification only and not indicating OEM manufacture.
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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