PTFE Belt Heat Sealer: There are three sealers in the HS-9 series. The only difference is the width of the base. Designed for sealing small Polytetrafluoroethylele (PTFE) coated conveyer belts such as fuse press machines, small laminators and tortilla cooking presses. The 1.25 inch wide sealing area of the Model HS-9A is best suited for making simple 1 inch wide overlap splices. The narrow heated surface minimizes distortion of the belt outside of (and immediately adjacent to) the overlap sealed area.