I hate it when.......

[peatff]

3 hours ago, Ratman said:

Yep, same cap, only had the one tube. Its gone off in the tube with some bits going hard and some bits remaining soft. Never had an issue before but its almost a new tube and very annoying.

JB Weld is a two part adhesive you need two tubes to make it work. If you put the hardener lid on the glue tube it will set. 

[Khriss]

6 hours ago, peatff said:

JB weld is not a sealant like Blue Hylomar it's an adhesive, Hylomar is for gaskets. I've never had JB weld go off in the tube are you replacing the caps and not mixing them up ?

Hence 'best selling exopy glue ' k

[Ratman]

JB Weld is a two part adhesive you need two tubes to make it work. If you put the hardener lid on the glue tube it will set. 

No its not, the stuff i had was called JB Weld ultimate black, it is a RTV silicone and gasket making sealant that is resistant to high temperatures, greases and oils.

[peatff]

You missed out on that important detail ?

[difflock]

Yup! "JB Weld" with no other sub-descriptors is 2-pack epoxy stuff.

Bit like "Hoover" being a vaccum cleaner.