JB Weld

Mark W

Mark W

Well-known member
Anyone have any experience with this stuff? What can it, and what can't it do? My grease seals for the homebuilt mudmotor are slightly to small (the metal ring that will meet the inner wall of the drive tube). Ca I put a little of the JB weld on the outer ring to cold weld it in place? Any other thoughts.

Mark W
 
It will work for that, but you will never get the seal back out without distroying it and the tube it is welded in.

You could use JB weld to build up a surface on the seal and once it has cured then sand it down to press fit into the tube.
 
Or, build up a small lip in the inner wall of the drive tube so that the seal can't get past? Good idea Ray.

Mark W
 
Mark,

Have you worked the bore on the bushings yet? What did you decide to do?

Ray's suggestion on the seal O.D. is a good choice. After the JB weld sets up you an slip a bolt though 3/8 washers on either side of the seal and place a nut on the screw and tighten the nut enough that the seal won't spin. Then you can chuck the bolt into a hand drill if you don't have a drill press then you can use emery cloth to dress the dia to fit the tubing.

My seals came in today and when I tried to insert them into the tubing they weren't even close to fitting. Come to find out the tag is wrong on the tubing I bought. The tag reads 1" x .125 wall but when I got my calibers out it measures roughly 1/16" wall. I guess it's back to the hardware store.

Ed
 
Mark, JB Weld works well, however I have had more success with the Loctite brand two part epoxy for metal to metal.
 
OK guys - a real rookie here. I understand what is being said about putting the JB Weld/Locktite 2 part product on the seal and then sanding away the excess until it fits properly. This sounds like a real good opportunity for me to mess things up. If you don't get an even coat on the seal, won't sanding a perfectly round final product be difficult to do? Any tips from those more gifted than me? I'd like to be able to do this myself and I don't have a lathe.

Thanks -

Mark W
 
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slightly to small
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Mark, We need better info than that. One guys " slightly too small" equals another guys, "so loose you could throw it in from 15 feet".

I can't remember the product number off the top of my head but Locktite makes a product that may work for you. If I remember correctly one of their offerings is good for up to a .015 gap.

Like you I would be concerned with keeping the OD. concentric with the ID., as well as roundness, trying to "sand" an application of cured JB Weld.
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