Pack-Tech's RC-1820 Rotary Vacuum Chamber machine features all stainless steel construction and a patented sealing system. Completely microprocessor controlled, the machine offers setting storage capabilities for up to 10 different products. It provides controllable sealing temperature, time and pressure for use with all bag brands and thicknesses. Because of the patented technology, there are virtually no leaker rates in the seal area, says the company. The company offers straight and/or curved sealing bars.