Description
Stop messy oil leaks and protect your high-capacity trailer bearings with this heavy-duty hub cap O-ring replacement.
Part number 010-050-00 (commonly found on Sun Country HDSS assemblies and Traction 71-148-00 setups), is a premium nitrile rubber (NBR) O-ring that creates an airtight radial seal between the trailer wheel hub and the screw-in oil cap. It features maximum oil resistance and compression resilience to prevent gear oil from seeping out while completely blocking moisture, dust, and corrosive road grime from destroying your internal components.
Material & Dimensional Specifications:
Inside Diameter (I.D.): 3.734 inches
Cross Section (Thickness): 0.139 inches
Material Compound: Premium commercial-grade Nitrile Rubber (Buna-N)
Quantity: Sold individually
Exact Fitment & Compatibility:
This high-durability replacement O-ring is universally sized to seal standard 4"-12 threaded trailer oil caps, including:
Compatible Dexter Caps: Fits factory oil cap models 21-36 (#021-036-00) and 21-37 (#021-037-00).
Axle Application: Direct fit for heavy-duty commercial setups including 9K (after Oct. 1989), 10K (General & Heavy Duty), 12K, and 15K weight-rated trailer axles.
Rig Compatibility: Commonly used on heavy-duty car haulers, goosenecks, industrial equipment trailers, and utility flatbeds.