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Where do you buy trailer grease seals?

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I'm having difficulty finding axle grease seals for a Forest River Wildcat travel trailer my folks own.



The inner grease seal is stamped 21333. Nothing I can find online is double-lipped and has the exact same dimensions (ID, OD, and Width).



The trailer has the AL-KO torsion axles.



Seal is

ID 2. 125

OD 3. 375

Width . 325
 
Last edited:
A double lip seal is designed to keep dirt/water out and grease in... usually for trailers that are used to launch boats... most mechanical seals have just one lip. .

A double lip seal is also used where bearings might be in an oil bath...
 
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