Bimba's NFPA heavy duty stainless steel cylinder is ideal for applications subjected to chemicals and corrosive environments. Options include an FDA approved lubricant and solid Delrin® rod bushing, which is also FDA approved.  The solid stainless steel piston provides maximum corrosion resistance.Bore sizes:  1-1/2", 2", 2-1/2", 3-1/4", 4", 5", 6", 8"Piston rods are hard chrome plated, ground and polished stainless steelMaximum Operating Pressure:  250 PSI air, 400 PSI hydraulic non-shock (TH option)316 stainless steel is optional; please allow additional time due to material availabilityStainless steel multi-stage and triple rod cylinders are availablePermanent lubrication design provides outstanding service life.