Harvest Right 12″ Impulse Sealer5mm width 13lb Seal and store your own harvest with the Harvest Right 12 inch Impulse Sealer. Now you can prepare your own food items for long term storage with ease. No warm up or cool down time required Simple and easy to use, Adjustable for various mylar thicknesses An impulse sealer is a powered tool used to seal different types of packagingsuch as mylar bags. It uses an impulse of electricity to heat up a metal wire that melts one layer of