Weforma Pet Shock Absorbers Are Designed For Use In Blow Molding Machines. Due To High Cycle Times Standard Shock Absorbers Quickly Fail. Series W-Pet Provides Constant Performance For Up To 20 Million Cycles In Approved Applications Such As: P.E.T. Container Manufacturers, Blow Molding Machines, Injection Molding Machines, Plastic Bottle Manufacturers And High-Speed, Repetitious Applications Requiring Exceptional Durability And Performance. Weforma Pet Shock Absorbers Offer Extended Life Time With Upto 20 Mio Strokes. The Piston Is Hardened, Aluminium-Titanium-Nitride Coated & Has Integrated End Stop: Max. Security. They Are Fitted With Special Seals + Oils & Can Be Used At Temperature: -30°C - +100°C. They Have Minimized Scheduled Maintenance Requirements, Reduced Replacement Costs, Easy Replacement Of Existing Shock Absorbers And Rohs Directive 2002/95/Ec.