procurement of spares for fluid coupling , model smd-8 and smd-9 as per nit , procurement of spares for fluid coupling , model smd-8 & smd-9 . , impeller pt . no . - 3 m / c 25601880036 , impeller sleeve pt . no . - 6 m / c 25601880051 , oil seal ( casing side & impeller side ) pt . no . - 14 & 15 , one set consisting of two nos . oil seal m / c 23202991301 , o ring ( collar ) pt . no . - 16 m / c 25601880071 , flexible input hub pt . no . - 37 m / c 22810810089 , delay chamber oil sleeve bolts & lock washers pt . no . - 40 & 41m / c 25601880162 , collar washer , collar nuts and collar bolts pt . no . - 18 , 19 , 20 m / c 25601880174 , rotor bolt & baffle bolt pt . no . - 27 & 28 m / c 25601880186 , smd-8 complete fluid coupling bore , size - 80mm , part no . flsmd8 m / c 23010100013 , rotor , pt . no . - 2 m / c 25801880029 , impeller pt . no . - 3 m / c 25801880032 , impeller sleeve pt . no . - 6 m / c 25801880052 , flexible input hub , pt . no . - 37 m / c 22920990181 , delay chamber oil sleeve bolts & lock washers pt . no . - 40 & 41 m / c 25801880167 , collar washer , collar nuts and collar bolts pt . no . - 18 , 19 , 20 m / c 25801880179 , rotor bolt & baffle bolt pt . no . - 27 & 28 m / c 25801880182 , bolt casing sleeve & washers pt . no . - 25 & 26 m / c 25801880214