10-59 - Oil Cap O-Ring

The 10-59 Oil Cap O-Ring is a durable, precision-molded seal designed to prevent leaks around oil cap openings on trailer hubs and hydraulic systems. Constructed from high-quality nitrile rubber (Buna-N), this O-ring resists oil, grease, and extreme temperatures—making it a dependable solution for heavy-duty applications.

Features:

• Creates a tight seal between oil cap and hub or reservoir
• Made from nitrile (Buna-N) for superior resistance to oils and fluids
• Withstands high-pressure and temperature variations
• Ideal for routine maintenance and leak prevention
• Quick and easy drop-in replacement—no special tools required

Specifications:

• Part Number: 10-59
• Material: Nitrile (Buna-N) rubber
• Inner Diameter (ID): 2.875″
• Cross-Section Thickness: 0.125″
• Temperature Range: –40°F to 250°F (–40°C to 121°C)
• Application: Oil cap sealing for trailer hubs, gearboxes, and hydraulic reservoirs
• Includes: (1) Oil Cap O-Ring

Fitment:

• Fits oil caps with 2.875″ ID sealing surface
• Commonly used on oil bath hub caps for 9K–12K trailer axles
• Compatible with Dexter®, Lippert®, and other standard oil cap assemblies
• Confirm oil cap groove dimensions before ordering