Rubber Extrusions Rubber extrusions from Truco are used throughout the local mining, industrial and automotive industries. In addition to a range of immediately available rubber extrusions, Truco is able to accommodate special, made-to-order designs with best-in-class turnaround time on orders. Truco uses natural rubber, EPDM, nitrile, neoprene, Viton and silicone in a range of hardness from 40° to 90° shore. Available rubber extrusion profiles: Solid Sponge Round Square Rectangular Tubing and specially-shaped profiles