Abstract: A reusable two-part tubing clamp made of stainless steel has a plurality of circumferentially continuous knife edges that deform the joined tubes to form a series of seals along the length of the tubes. A tab on each side of the clamp extends inwardly so that the generally circular area inside the clamp has two flattened sides. The two parts of the clamp are drawn together by tightening combination wing-square nuts onto separate Allen-head screws which pass through holes in each of the two clamp parts.