Alain, any high strength two part epoxy should do the same job. If you can't find that use high temp silicone, which is used on exhaust systems for cars. Autoparts stores carry it on this side of the world. Haven't built one of the penny stoves yet, still looking for someone to empty a few beer cans for me, but i have built a couple of the photon style stoves and used automotive silicone and have not had any problems.