Lufkin
Oil seal for Lufkin RS1818H
This oil seal is designed for the midshaft seal and slinger assembly of the Lufkin RS1818H marine gear. It serves as a barrier to contain lubricant within the gearbox and prevent the ingress of external contaminants.
Parts diagram
Compatible models
Specifications
- Part number
- BM31860
- Brand
- Lufkin
The BM31860 oil seal functions as a critical component within the midshaft seal and slinger assembly of the Lufkin RS1818H marine gear. Its primary purpose is to maintain a secure seal around the rotating shaft, ensuring that lubricating oil remains inside the gearbox housing while preventing external elements such as water, dust, and debris from entering the system. By maintaining this barrier, the seal protects internal gears and bearings from contamination and fluid loss.
This component is specifically engineered for fitment in the Lufkin RS1818H marine gearbox. Proper installation of this seal is necessary to ensure the midshaft operates within its intended environment, preventing potential leaks that could lead to lubrication failure or damage to the drivetrain components.
In mechanical systems, oil seals are used to bridge the gap between rotating and stationary parts. They prevent the escape of fluids and the entry of environmental contaminants, which is vital for the continued operation of gearboxes and transmission assemblies in marine applications.

