Handy Fill Holes
Aluminum wheel hub manufacturer ConMet has made lubricant fill holes a standard feature on its steer, drive, and trailer hubs. Located in the barrel of the hub, the fill hole allows users to add semi-fluid grease directly into the hub cavity without disturbing the outer bearing and spindle nut. The new ConMet fill holes minimize the risk of cocked seals and come equipped with a compression O-ring fitting, which eliminates the risk of leakage once that fill hole plug has been properly installed.
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