the seal assembly 10 one of the advantages of using the profiled inner and outer seal rings as disclosed herein is the low friction between these two members thereby providing for an assembly that can be quickly and easily formed moreover the inelastic material of the rings allows for the rings to move easily relative to one another and as such further maximizing the radial load generated with relative axial movement of the inner and outer seal rings 24 32 rings formed from the inelastic material will not coalesce like other parts that may be highly compressed over time and at elevated temperatures further simplicity is realized with the present example in that it relies on variations in wellbore pressure to generate the sealing force required during these high pressure events the materials also allows for operation at high temperatures such as in excess of 400 u00b0 f and also at cryogenic temperatures well below u2212 20 u00b0 f the inelastic materials can mitigate seal failure from explosive decompression and allow rapid bleed down of annulus pressures and also mitigate risk of material degradation or swelling due to chemical attack the seal may be included with the tubular on which it is located or it can be set with a running tool although shown in the embodiments as being in a.