Available in 1/2 to 4 in. bore sizes, NB Series has cylinder tube constructed of impact resistant and self-lubricating high strength composite material. Interchangeable compact air cylinders include composite bearing material Duralon, which is resistant to corrosion, moisture, and temperatures up to 325°F. Options include nonrotating piston rod, multistage, and multiposition, as well as standard double-rod and single-acting configurations.