Abstract: A flange clamp also known as a quick release clamp, in a preferred embodiment, includes a first half clamp body and a second half clamp body; the first half has a first arc outer side and a first arc inner side with the inner side having a first arc first load bearing shoulder and a first arc second load bearing shoulder. The first arc having a curvature of about 175 degrees to about 350 degrees with a first space is formed between the load bearing shoulders and is adapted to fit about a flange.