MDC stocks thousands of off-the-shelf vacuum components. Our product line consists of flanges, fittings, valves, roughing hardware, vacuum measurement, motion and manipulation instruments, thin film equipment and vacuum chambers. MDC's Ceramics Seals Business Unit manufactures the ISI? product line of ceramic-to-metal sealed electrical feedthroughs and optical components. MDC's Gas Delivery Business Unit specializes in the manufacture of ultra-high purity gas delivery systems including welding of gas lines, vacuum weldments, tube bending and assembly. Visit www.mdcvacuum.com.