Established in 1958, Purosil is a world leader in design and manufacture of high quality silicone reinforced hose for the hea ... vy-duty truck, bus, and coach sectors, as well as the construction equipment, farm equipment, U.S. military vehicle, stationary generator, and marine markets. Products include: Heater Hose, Coolant Hose, Marine Wet Exhaust Hose, Air to Air Hose, Vacuum Hose, Clamps and much more. We manufacture High Performance Silicone, EPDM Air Intakes, and Silicone and EPDM Knit Hose. read more