INTERMEDIATE GEAR COMPLETE TO REPL PART No. A6103a, DRG. No. AM- 300792- R2 OR TO RDSO DRG. No. SKEL 4615. MAKE: RIVER ENGINEERING OR INVOLUTE ENGINEERS. SET OF ITEMS FOR CONTROL CYLINDER O RING CONSISTS OF 2 ITEMS AS GIVEN BELOW: 1 ) PACKING RING AS PER REPL PART NO: A4430. 4 AND DRG NO: AM- 404742- P1- Qty- 01 No/ Set. 2 ) DAMPING GASKET AS PER REPL PART NO: A4430. 2 AND DRAWING NO: AG- 413762- P25- Qty- 01 No/ Set. MAKE: RIVER ENGINEERING ( OR ) INVOLUTE ENGINEERS only.