... roller size 28mm;max temp 800 C Hot air seam sealing machine is applied to Nylon-PVC, nylon-PU, rain coats ... suits, tents,waterproof coverings' sealing...Hot air seam sealing machine ==Features==1, LCD screen, steady operation, reliable quality, all the actions parameters are ... prevent staff modify the parameters, so that to make quality more reliable.3,Automatic temperature control,simpler operation.4, ...