Putty ( Homogeneous paste ) for use on Window Frames to IS: 419- 1967 ( Reaffirmed 2009 ), Amendment No. 2 to 5. Shelf life: 9months from the date of receipt in stores or 12months from the date of manufacture whichever is more. PACKING CONDITION: Packing in 20 Kgs. new non- returnable M. S. Drums to IS: 2552/ 89 with amendment no. 1, Grade B2