The body of this cam and groove fitting is made of aluminum. Aluminum camlock fittings are lightweight and resistant to abrasion corrosion and some chemicals. This type DP male camlock (Cam and Groove) fitting  attaches to a standard female cam and groove coupling.  These cam and groove fittings are suitable for use with water, hydraulic oils, coolants, gasoline, and other petroleum products.

You can also check out it’s plastic counterpart the Type DP – Polypropylene Male Camlock Dust Plug Attachment which is available from 1.5″ to 4″ diameters.