Key Features

• John Deere internal oil seal, part number M91399, designed for shaft applications.
• Prevents passage and return of fluids along the shaft, helping maintain lubrication integrity.
• Blocks ingress of foreign matter and contaminants to protect bearings and internal components.
• OEM-design alignment with John Deere specifications for reliable sealing performance in relevant assemblies.

Product Details

• Product type: Internal Oil Seal
• Manufacturer: John Deere
• Part number: M91399
• Function: Seals shafts to prevent fluid leakage and ingress of contaminants
• Primary use: Applied on shafts to minimize leakage and contamination in hydraulic, transmission, or related systems

Compatibility

• Designed for John Deere equipment and assemblies that specify the M91399 internal shaft oil seal
• Suitable as a replacement in shaft sealing positions where the M91399 specification is required; verify bore size and seal fits to ensure proper installation