tender for polychloroprene rubber pad for 25 kw brushless alternator of size 210 x240mm, 18mm thick, black colour, conforming to rdso drg. no. skel 4021 alt-2 andshore hardness shall be 70 plus or minus 5 as per item no. 8 of rdso drg. no. skel3652 alt.3. shelf life: 1 year.