These units are direct (constant) heat hand wheel sealers that seal plastic material in any configuration available with seal widths from 1mm to 10mm. Simply place the PTFE coated wheel along the material whether the material is polyethylene or cellophane. These versatile sealers can make round, oval, square or any unique shape with a textured mesh seal. The HWS Series is available in 5mm and 10mm seal widths. The AIE series is available in 1mm, 5mm and 9mm seal widths. Easy to Operate - Place the unit on the rack and plug into an outlet. Turn on the temperature control knob to the setting that seals the material. Allow the unit to heat up for approximately 10 minutes. Place the material to be sealed on the heat resistant rubber mat and roll the hand wheel across the material. Note: A few trials may be necessary to determine the correct temperature setting and speed.