Component Parts and Materials 1 Steel AISI 304 Nut 2 Steel AISI 316 Piston rod 3 Polyurethane Rod seal 4 Steel AISI 304 Front cover 5 Steel AISI 304 Nut 6 Sintered bronze Bearing 7 NBR O-RING Seals 8 Neoprene Bumper 9 Brass Piston 10 Polyurethane Piston seal 11 Plastoferrite Magnet 12 Steel AISI 304 Mini cylinder shape body 13 Steel AISI 304 Back cover Fluids Filtered and lubricated compressed air as well as non lubricated air. Functioning Double-acting magnetic. Double-acting without magnet.