The Wilwood Wide 5 hub oil seal labeled for 1-ton applications (20-077-1) is a replacement seal intended for wide five hub setups on heavier-duty 1-ton axles. It’s specified to fit the listed Wide 5 hub pattern and helps retain lubricant while keeping contaminants out of the hub assembly for heavier-duty wheel-end applications.
Wilwood Wide 5 Hub Oil Seal 1 Ton 20-077-1