Roper Pump D83-5 General Purpose Lip Seal for 11 to 22 GHB
The Roper D83-5 is the general purpose lip seal used on 11, 17 and 22 GHB pumps, the frames built with a tapped port case, an outboard ball bearing and a gear reducer mounted directly on the pump head. A lip seal works by holding a flexible garter loaded lip against the turning shaft, which makes it well suited to keeping reducer oil in and dirt out at a shaft that runs continuously at a modest surface speed.
Lip seals fail in a predictable order. The lip hardens with heat and loses its spring, the garter spring relaxes, and the shaft develops a fine groove exactly where the lip has been riding. A new seal pressed onto a grooved shaft will leak again within weeks, so always run a fingernail across the shaft before fitting one. Press the seal in square using a driver that bears on the outer case rather than the lip, lubricate the lip before assembly, and take note of which way the lip faces on the old part, because a seal installed backwards will pump oil out rather than hold it in.
Key Features
- Genuine Roper Pump Company lip seal, part number D83-5
- General purpose specification for the 11, 17 and 22 GHB frames
- Garter spring loaded lip that holds tension on the shaft as it wears
- Keeps lubricant in and airborne dirt and moisture out
- Inexpensive renewal item for any shaft seal service
Applications
- 11, 17 and 22 GHB gear pumps with built-on reducers
- Gear reduced pump packages driven by standard speed motors
- Shaft seal renewal during a planned service interval
- Repairs following an oil leak at the drive end
- General industrial and transfer pump maintenance
Specifications
- Brand: Roper Pump Company
- Part Number: D83-5
- Part Type: Lip seal, general purpose
- Fits: 11, 17 and 22 GHB pump frames
- Configuration Note: GHB denotes a tapped port case with an outboard ball bearing and a built-on gear reducer
- Function: Retains lubricant at the shaft and excludes contamination
- Condition: New
Frequently Asked Questions
Q: Which way should the lip face when I press it in?
Toward the fluid it is holding back. Note the orientation of the old seal before it comes out, because reversing it turns a seal that retains oil into one that drags dirt inward.
Q: The shaft has a groove where the old seal ran. What now?
Either fit a thin repair sleeve over the worn band or move the new seal slightly along the shaft if the housing depth allows it. Pressing a new lip into an old groove simply repeats the failure.
Q: Do I need to lubricate the lip before assembly?
Yes. A dry lip can be burned in the first seconds of running before oil reaches it. A film of clean oil or grease on the lip at assembly is enough.
Q: Why is the seal weeping only when the unit is cold?
Cold oil is thicker and slower to reach the lip, and a hardened lip has lost the flexibility to follow the shaft until it warms. It usually means the seal is near the end of its life rather than wrongly fitted.
Not sure this is the right part? Send us a Picture of the pump plate on your pump and the CLR Marine team will confirm the correct lip seal before you order.
CLRMarine
