Top positive review
Use High Temp Sleeve Retainer Compound for a Trouble-Free Installation
Reviewed in the United States on June 11, 2019
Replaced old rusty painted boat trailer hubs with pitted chromed bearing protectors (another brand) with new galvanized hubs and added these new stainless steel Bearing Buddy protectors.
PROS: The blue ring gives a good visual reference for how full of grease the hub is. Mine DID NOT FALL OFF soon after installation, as some reviewers complained of. Read the discussion of CONS, below.
CONS: Bearing Buddies do not come with sleeve retainer compound for installation, but they don't come with bearing grease either, and in my opinion, BOTH are needed for a proper installation. I believe that anyone that installs Bearing Buddies (which rely on an interference fit) should be using a sleeve retainer compound like Permatex 64000 High Temperature Sleeve Retainer or Loctite 37424 640 High Strength Sleeve Retainer on the mating surfaces.
Small differences in the bore size of your hub versus the Bearing Buddy can be an issue and result in a weak connection, and sleeve retainer compound can keep Bearing Buddies firmly in place when the mating surfaces are not a perfect interference fit. Think of sleeve retainer compound as being similar in concept to thread locking compound (e.g. Loctite Threadlocker) but it's designed to improve the strength of slip fit or press fit components by filling small voids between the mating parts and to add strength to the assembly. Permatex and Loctite both claim that the compound can add "up to 3,000 PSI holding power."