Heat Sealer Ideal for retail, produce, grocery stores, and industrial sealing, these 8″ poly plastic bag impulse heat sealers are professional grade and are equipped with innovative design that removes the need for operator training. Simply plug it in and it’s ready to go, eliminating warm-up time. With it’s durable cast metal construction, sealers are lightweight and portable. Adjustable time and light indicator lets you know when a tight seal is complete, making your sealing process vitally simple.