The STS-7 Single Tube Sealer is ideal for laboratories, research facilities, R&D and quality control groups. The unit is economical, safe and very easy to use. Other applications include sealing of small bags, generally medical in nature and minimal production runs. The STS-7 is a self-contained unit with a built in air compressor and solid state heat and cool timers. An adjustable stainless steel shelf with height gauges allows for easy changeover of various height tubes. The STS-7 can be used on all polyethylene, glaminated and laminated tubes.