Piston: High-grade ductile iron with 45,000 PSI yield Tube: Precision honed DOM 1026 materialRod: Ground and polished chromed C-1045 steel, 75,000 PSI minimum yield base Plate: C-1026 steel Spacer Tube: C-1026 steel on strokes of 1219mm and above Gland Seal: Polyurethane U-cup Rod Wiper: UrethanePiston Seal: Hallite 755 with square section O-ring energizer Elastomer Rod Bearings: Replaceable Nylon Glass Filled All Other Seals: Selected and designed for maximum life Paint: Black Terms of Access