inner ring id is 1.7722 in. min., 1.7724 in. max.; outer ring width is 0.4674 in. min., 0.4694 in. max.; outside dia. is 3.1092 in. min., 3.1095 in. max.; used on J85 augmented turbojet engine 252b single row, non-locating, cylindrical inner ring, two lip outer ring, separable