Loctite 380 Black Max

[outerlimits]

anyone have any experience removing metals bonded using loctite 380? want to remove a JP rib mount from a shotgun barrel and don't really want to muscle it off.

[Dan Sierpina]

I bet if you freeze it, it will come off without too much hammer work.

[kevinj308]

Like liquid nitrogen freeze? We get it at our welding supply shop for freezing bearings and bushings. They drop right in a press fit bore.

We take it out in the field in a thermos, I bet your local Praxair or Airgas would sell you just a little bit to take home. Pour it in your igloo ice chest or something. Just a thought, I've never used it for this application before. Wear a face shield and heavy leather gloves. Use pliers to get the part out, even with the gloves.

I'd be really interested to know if you find something, freezing or otherwise, that works.

Kevin

[RIIID]

The proper amount of heat should get it to release.

Rich

[BlueOvalBruin]

Acetone should work, just make sure there's nothing else around that it can attack.

[yoshidaex]

Temp range for Loctite 380 is between -65 degF to 225 degF.

A heat gun should weaken it enough for you to pull that sight off.

At 248 degF, its retaining strength is less than 25%.

Loctite 380 spec sheet