O-Ring Cover Cap 2-343/90 Nitrile
The O-Ring Cover Cap 2-343/90 Nitrile is an elastomeric sealing ring used at the cover cap of Kerr pumps, closing the joint to prevent leakage of fluid or pressure. The name follows the standard convention: 2-343 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 KA-38N and fits a range of Kerr horizontal directional drilling (HDD) pump models.
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
Specifications
| Property | Value |
|---|---|
| Weight | 0.04 lb (≈ 0.02 kg, converted) |
| Width | （无） |
| Height | （无） |
| Depth | （无） |
Manufacturer technical notes
O-Ring Cover Cap 2-343/90 Nitrile (KA-38N, SKU KA-38N), molded from ASTM D1418-certified NBR rubber with precision vulcanization (hardness 70±5 Shore A), API 7K-compliant for mud pumps, pressure differential ≥20MPa, salt spray tested 1000h corrosion-free, ISO 3601-1/DIN 3771 certified for high-pressure leak-proof reliability.
Verbatim from the Dongli product page on dlhddrilling.com.
Replacement / interchange
Aftermarket replacement cross-referencing Kerr KA-38N.
FAQ
- Which pumps does this cover cap O-ring fit?
- It fits the Kerr JT7020, KA-3500PT, KT-3350PT, KT-3400PT, T-35, T-40, T50 and T50-PT pump models.
- What do 2-343 and 90 mean in the name?
- 2-343 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 KA-38N, 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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