Cello — Not availbl ity of spares parts

I have bought one Flask from Nahar Home Needs Annapillai street Chennai for Rs 550/-.Before two days I have lost Vascher Or Rubber parts of cap.When I went there they have told parts is not available.and it is not possi ble.Now for a small thing is wasted.Can I get the part from any where in chennai .Let me know