It is 2mm thick. The gasket in the picture we have cut as an example. It is very easy to cut with a pair of scissors.
3MM TSEC PAPER STOVE DOOR GLASS SEAL FLUE PIPE GASKET MATERIAL A4 Sheet
Stove door glass seal ,Flue pipe gasket material 2mm A4 sheet
2-4M Flat Stove Door Glass Seal Rope 10/12mm Self Adhesive Heat Resistant Tape
2MM INSULFRAX S PAPER STOVE DOOR GLASS SEAL FLUE PIPE GASKET MATERIAL A4 Sheet
Stove door glass seal ,Flue pipe gasket material 3mm x 295mm x 160mm
