Atlas Quick-Disconnect fittings are made of 6061-T6 aluminum and available for seventeen US standard tube sizes from 1/16 up to 2 inch diameters. Fittings are comprised of four basic parts... a body, gasket, retainer and nut. Standard gasket material is a Viton® elastomer, which is capable of sustained operation at temperatures to 150°C. Quick-Disconnect fittings are quick and easy means of connecting tubular vacuum components such as feedthroughs, gauges and glass tubing. With 1/3 the weight of competing stainless steel parts, Atlas Quick-Disconnect fittings are the light and economical alternative.