Ring seal with inner lip

A device for sealing between a first component and a second component, the first component having a groove formed therein, the groove having a first wall and a second wall, the device comprising:

• an annular body at least partially disposed within the groove, the annular body having:
• a first side configured to selectively contact the first wall of the groove;
• a second side opposite the first side, wherein the second side is configured to selectively contact the second wall of the groove;
• a first surface in contact with the second component;
• and
• a second surface opposite the first surface;
• a lip bonded to the second surface, the lip extending at least partially around the second surface of the annular body;
• and
• whereby a pressure acting on the first side of the annular body and the lip forces the second side to contact the second wall of the groove, and a pressure acting on the second side of the annular body and the lip forces the first side to contact the first wall of the groove.