Pneuflex Inc. Offers Flat Shape Disc Tube. Pneuflex Inc. Is an ISO 9001: 2000 registered organisation that offers assorted range of industrial brakes, pneumatic clutches, industrial clutches, pneumatic brakes, combination clutch, combination brakes, disc brakes, disc clutches, etc. The Flat Shape Disc Tubes are used in oil immersed conditions only. The Flat Shape Disc Tube are used mainly in machine tools and do not require any adjustment for wear during use. The Disc Clutch combines all the best features of the disc type clutch with all the advantages of direct air engagement. The simplest and most trouble-free method of applying air pressure is through direct axial pressure application by compressed air in a special composition full-circle tube.