CAT Pumps 55337 Buna-N Oil Seal 2DX - 3926
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The Cat Pumps 55337 is a genuine OEM oil seal for Cat 2DX Series plunger pumps. It fits around the plunger rod at the crankcase, helping keep lubricating oil in while keeping water and contaminants out. Made from 70-durometer Buna-N (nitrile) rubber, it’s designed to handle exposure to pump oil and water and is listed for operating conditions up to 2,000 PSI and 140°F.
If you notice oil leaking beneath the pump, a falling oil level, or milky oil, the seal may be worn. Since water and oil seals often wear together, replacing the oil seals during a water-side rebuild is a practical way to help protect internal components.
If you notice oil leaking beneath the pump, a falling oil level, or milky oil, the seal may be worn. Since water and oil seals often wear together, replacing the oil seals during a water-side rebuild is a practical way to help protect internal components.
Key features:
- Oil seal for Cat 2DX Series pumps
- Buna-N (NBR), 70 durometer
- Keeps oil in and water and debris out of the crankcase
- Listed for use up to 2,000 PSI and 140°F
- Genuine OEM Cat Pumps part