- silicon is supposed to stop water leakage. all u need to do is apply properly and wait for it to dry up a bit. i guess if u do in two steps it will do the job .. step 1 ; fill cavity in housing with silicon, let it dry 10-15 mins .. now apply silicon on surface or where it it fits .. do not tighten bolts fully wait 5-10 mins to tighten the bolts .. silicon should come out from sides indicating it has covered the complete area
-- other option is to go a rubber seal manufacturing shop .. in rawalpindi there is a longman rubber shop who manufature rubber parts as per requirement and mostly u get something from their inventory .. so find a shop in ur city which manufactures rubber seals
-- another option is find part number of this seal and check compatibility .. i will try to find the parts catalog for ur car but for that i need engine code and first 5 figure of chasis no