6 Series NCM Construction: Double Acting, Double Rod No. 1 2 3 4 5 6 7 8 9 10 Description Material Aluminum alloy Stainless steel Aluminum alloy Stainless steel Carbon steel Sintered bronze Spring steel Urethane NBR NBR NBR Note Clear anodized Stainless steel 304 Chromated Hard chrome plated Rod cover Cylinder tube Piston Piston rod 3/4", 7/8" 1-1/16", 1-1/4", 1-1/2", 2" Bushing Retaining ring Bumper Piston seal Piston gasket Rod seal Component Parts