Ring type gaskets have no bolt holes. These gaskets are positioned inside the flange bolts and around the pipe bore and are typically used on raised face flanges. When used on a raised face flange, the ring gasket is positioned on top of the raised surface of the flange. An advantage of ring gaskets is that they can be installed without having to fully disassemble the joint.
A full-face gasket covers the entire face of the flange. Full-face gaskets are typically used on flat face flanges and are cut with bolt holes which allow the insertion of the flange bolts through the gasket. When installing full-face gaskets, the joint must be completely disassembled. View our full product line here.