Just peel tape from the roll and place on the correct area (you may need to clean the strip location before placing the new piece of tape). Over the wire for vacuum sealers, under the wire for impulse sealers Tape may be slightly and longer than necessary, allowing for broad compatibility. Strip should be replaced when appearing warn, discolored or if sealing isn't perfect Fits virtually all vacuum sealers, as well as most models of hand / impulse heat sealers Replaces deteriorated or burnt-out PTFE tape, which is a crucial barrier between the heating elementsand the bag. Old tape causes poor bag sealing and can lead to a broken heating elementsand a broken sealer Comparing with common tape, this PTFE tape is more heat and cold . it has good effect in insulation for high voltage; there is no chemical reaction for chemical medicines or agents and solvents; It possesses resistance for light, oxygen, wear-resisting, anti , unordinary smoothness, good paste ability and other advantages.