Fits almost all vacuum sealers, as well as most handheld/impulse heat sealer models Replaces deteriorated or burnt PTFE, which is a crucial barrier between the heating elements and the bag. Old one causes poor bag sealing and can lead to broken heating elements and a broken sealer The strip can be made slightly wider and longer than needed, which allows for wide compatibility. The strip should be replaced when it appears warped, discolored, or if the seal is not perfect Simply peel it off the roll and place it on the appropriate area (you may need to clean the strip location before placing the new piece of ). On the for vacuum sealers, under the for impulse sealers Compared with common, PTFE is more resistant to heat and cold. It has an effect in insulating for high voltage; There is no chemical reaction to chemical drugs or agents and solvents; It has light resistance, oxygen resistance, wear resistance, corrosion resistance, unusual softness, good paste ability and other advantages.