generally at 100 in fig5 and 6 the seal assembly 100 includes a seal ring 102 and an elastomer energizer 104 the seal ring 102 is the same as the seal ring 12 shown in fig1 4 however the elastomer energizer 104 is a single element energizer instead of the dual element energizer 14 and 16 shown in the first embodiment preferably the elastomer energizer 104 is of the type disclosed in u s pat no 4 448 429 however other dual lobe elastomer energizers are suitable so long as they provide downward bias for the excluder portion 106 and seal portion 108 of the seal ring 102 in fig6 the seal ring 100 is shown in position for sealing a first member 110 and a second member 112 in the same manner as the first embodiment a third preferred exemplary embodiment is shown generally at 120 in fig7 and 8 the seal assembly 120 also includes a seal ring 122 and an elastomer energizer 124 the seal ring 122 is the same as the seal rings used in the first two embodiments except that the bottom edge 126 of the seal ring 122 is shaped to receive the lobes of elastomer ring 124 the elastomer ring 124 has a cross sectional shape having four lobes 128 130 132 and 134 as was the case with the prior two embodiments the four lobed elastomer energizer 124 is designed to provide directed bias to the excluder portion 136 and seal portion 138 of the seal ring the elastomer rings 104 and 124 are made from the same elastomeric materials.