Abstract: A seal ring (4) and a connection joint (1) for connecting and sealing conduits/pressure vessels (2, 3) and the like is disclosed. The seal ring comprises a radially inner sealing portion (5) having annular seal lips (6, 7) sloping radially outwardly to a web portion (8), the web portion extending radially outwardly to an outer scaling portion (9). Said outer sealing portion (9) having annular seal lips (10, 11) sloping radially inwardly towards the web (8). The annular seal lips of the inner sealing portion (5) face the annular seal lips of the outer scaling portion (9) and extend in a transverse direction to said web (8). This configuration provides improved seal characteristics giving particular benefit where there are high external pressures surrounding the joint (1) e.g. in deep sea applications.