The stated shelf life is 1 year but if it is only a year old and you’ve had it stored at 70 degrees you should be fine. I bought a kit with 7 year old Jeffco. No telling how it was stored.  The stuff still works, gets hard and is usable on non-strategic parts. I bought new for all structural bonding.

Stan

I bought some Jeffco epoxy and hardner a little more than a year ago.  They have been stored in my 70 degree-ish basement and have not been opened.  What is the normal shelf life?  Should I replace?

Will