Profile: Mar-Dustrial Sales, Inc. is a distributor of industrial power transmission equipments and conveying components. We specialize in obsolete gear reducers & parts. We offer spiral wound gaskets, heat exchanger gaskets, and metal gaskets. Spiral wound is manufactured by wrapping alternating layers of thin metal, and a soft gasket filler material such as flexible graphite, or PTFE. Variable-fill fluid drives provide the ultimate in close control of start-up and operating speeds & torques. Ideal on conveyors for dynamic multi-motor load sharing and ultra long starts. Variable-fill fluid drives also deliver economical load declutching and speed trimming. Variable speed control is available for pump, fan, and other centrifugal machines.