1 1/4 in, Nominal Outside Dia.
. 1 7/16 in, Cross Section Shape Rectangular, Durometer 55 Shore D, Durometer (Hardness) Rating Very Hard, Color Black, Temp.045 in, Nominal Width 3/32 in, Nominal Inside Dia. Backup Ring,Hytrel,124,PK50 Backup Ring, Material Hytrel, For Use with AS568A Dash No.