BACKING RING WITHOUT VENT HOLE FOR CTRB 6` X 11 CLASS`E`6X11 [NARROW JAW] DRG.NO:- WD-92089-S-01 ALT-1, ITEM NO-9 DPEC.No:AB/RB-39- 2002(Rev.3) with Amendment No.3.Acceptable Description:- TIMKEN MAKE BACKING RING FOR CTRB CLASS E-BEARING TIMKEN PA