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  • 1 Post By Oregonnovaguy
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Old 05-24-2018, 10:47 AM   #1 (permalink)
frysl
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Bearing seal sealant?

Im fixin' to repack the wheel bearing on my travel trailer.
The Lippert axle manual states that when replacing the seal, to use a sealant on the outside of the new seal.
Every seal I've ever relaced had to be driven into place with no chance of backing our on its own.
Is a sealant just a good idea, or is this a necessity? What would be used for this?
Steve

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Old 05-24-2018, 11:25 AM   #2 (permalink)
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Never heard of using a sealant on a bearing seal. Did you contact Lippert for clarification? I suppose a very thin layer of RTV, applied to the seal (not the bore)wouldn't hurt anything, but not necessary.

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Old 05-24-2018, 04:15 PM   #3 (permalink)
frysl
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Quote:
Originally Posted by Oregonnovaguy View Post
Never heard of using a sealant on a bearing seal. Did you contact Lippert for clarification? I suppose a very thin layer of RTV, applied to the seal (not the bore)wouldn't hurt anything, but not necessary.
Sure did. They say a thin coat of Permatex Ultra Black adhesive sealant is the way to go. Bought a tube at my local parts store for $6.
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Old 05-24-2018, 04:58 PM   #4 (permalink)
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Maybe they have found that water can creep in between the seal and the hub.
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Old 05-24-2018, 08:30 PM   #5 (permalink)
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In the '70s we always used Permatex on the OD of the seal when repacking wheel bearings. Many (most?) current day seals come with a coating already on the outside of the seal.
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Old 05-24-2018, 10:34 PM   #6 (permalink)
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Quote:
Originally Posted by CntrlCalDmax View Post
In the '70s we always used Permatex on the OD of the seal when repacking wheel bearings. Many (most?) current day seals come with a coating already on the outside of the seal.
Thats exactly what Permatex told me.

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