Piston: Ductile iron, precision machined. Tube: Honed steel, precision finished.Tube Seal: Nitrile rubber " O-ring" for long life. Gland: Ductile iron, drilled oil passages. This item is in the category "Business & Industrial\Heavy Equipment, Parts & Attachments\Heavy Equipment Parts & Accessories\Hydraulics". The seller is "herocomics2015" and is located in this country: US. This item can be shipped to United States.