Metronic 16inch/400mm Manual Impulse Manual Hand Sealer Heat Sealing Machine Poly Tubing Plastic Bag with 2 Replacement Kit Blue This very easily operated 16&#034; Impulse Bag Sealer is necessary help in every case, when there is anything to be packed or bags to be sealed. With its adjustable timer, it will reach different plastic needs. The desktop machine will be able to produce adequate heat to effectively melt the plastic material on the bag for optimum sealing.