Cyl-Tec, founded in 1991 and located in Aurora, Ill., specializes in supplying cylinders, and offers a wide range of testing and maintenance services, and cylinder accessories to the compressed gas industry. It stocks and sells steel and aluminum high pressure cylinders, acetylene cylinders, portable cryogenic cylinders, fast-dry water based paints, and cylinder valves and caps. The company operates a Department of Transportation approved hydrostatic and ultrasonic cylinder re-qualification center, and also offers liquid cylinder repair services. Cyl-Tec s services include high-pressure cylinder testing, internal and external shot blasting, gas service changes, siphon tube installation and valve replacement services. It also provides neck ring replacement, cylinder cradle and cradle manifold repair, and aluminum cylinder refinishing.