| 主权项 |
1. An annular seal assembly for forming a self-energized seal between two annular surfaces, the seal assembly comprising:
an annular base comprising sealing bands, wherein the sealing bands are radially raised with respect to the annular base and include approximately cylindrical sealing surfaces such that, before deformation, cross-sections of the sealing surfaces are substantially flat, and wherein the annular base is elastically deformable due to interference contact with one of the annular surfaces to effect a seal against the annular surface over the sealing bands; and a pair of spaced apart approximately cylindrical rims, each rim connected to the annular base only near an axial middle portion of the annular base, each rim extending radially from the connection with the annular base opposite the sealing bands, and each rim extending in opposite axial directions away from each other and not directly connected to each other, the rims including sealing surfaces, the rims being elastically deflectable toward the annular base due to interference contact with the other annular surface to effect a seal against the other annular surface over a range of deflection; the rims arranged to form a space between the annular base and each rim such that fluid pressure within the spaces is capable of further effecting the seals; and the annular base and the rims comprising a non-elastomeric materal. |
