10-63 - Unitized Oil Seal

The 10-63 Unitized Oil Seal is a premium seal designed for high-capacity oil-bath trailer hubs. This one-piece unit integrates the sealing surface and wear sleeve to prevent oil leaks while protecting the spindle from wear. Ideal for use in heavy-duty applications such as 12K–15K axles, this seal ensures long-lasting performance and simplified maintenance.

Features:

• Unitized construction combines seal and wear ring for superior sealing
• Double-lip design offers maximum protection against oil leakage and contamination
• Made from nitrile rubber and steel for durability under extreme conditions
• Pre-lubricated to reduce installation friction and startup wear
• Helps extend spindle and bearing life

Specifications:

• Part Number: 10-63
• Seal Type: Unitized oil seal
• Inner Diameter (ID): 3.125″
• Outer Diameter (OD): 4.500″
• Width: 0.500″
• Material: Nitrile (Buna-N) rubber with steel wear sleeve
• Temperature Range: –40°F to 250°F (–40°C to 121°C)
• Application: Oil-lubricated trailer hubs and heavy-duty axle systems

Fitment:

• Fits spindles with a 3.125″ shaft and hub bores of 4.500″
• Commonly used on 12,000–15,000 lb oil bath trailer axles
• Compatible with Dexter®, Lippert®, and other heavy-duty hub assemblies
• Verify dimensions before ordering for proper fit