Dust Caps are made from die cast aluminium and are easy to use. They are suitable for use with all API valves manufactured in accordance with API RP1004. Emco Wheaton API Dust Caps protect the poppet face of the API Adapter and prolong seal life. The radial cam and lug design allows one-handed operation and the compact, glass-filled nylon cams reduce wear and eliminate the risk of corroslo