tender for silicon sealant in pack of around 300 gm / ml suitable for external uses in ac coaches to provide inthe gap between metal parts to arrest rain water leak. make shall be sikasil-305 cn (or) anabond-679 (or)momentive-tse 382 (or) any reputed make of same properties. suppliers shall furnish necessary proof fromoem or authorised dealer of oem for the originality of the supply item. the item should be having manuufacturingdate within a month from the supplied date.