Designed to withstand washdown applications, the F-Series stainless steel pneumatic air cylinders join the company's NITRA pneumatic product line. Made with corrosion-resistant 300 series stainless steel, the double-acting cylinders have a 250 psi operating pressure, and Teflon-based rod and pivot bushings. The urethane rod wiper keeps washdown solutions out of the cylinder.
With bore sizes from 3/4-in. to 2 inches and stroke lengths from 1/2-in. to 18 inches, the cylinders meet a range of applications, including on packaging machinery.
Source:
http://www.packagingdigest.com/article/522794-Stainless_steel_air_cylinders.php