The original Flange Skillet™, which has been in use since 1980, self-aligns the gasket and stays within the flange assembly. The neck of the skillet has perforations which allow it to be broken off, providing a flush surface with the outside diameter of the flange. This Flange Skillet™ is not suited for compact flanges or other custom flanges that leave no space between the flange faces at final bolt up.