supply of gasket set made of best quality rubberized cork sheet rc-70c conforming to is 4253 / part-2 / 2008 with its latest amendment etc , supply of gasket set made of best quality rubberized cork sheet rc-70c conforming to is 4253 / part-2 / 2008with its latest amendment if any ) for use in repairing of 25 kvato 100 kva distribution transformers ) and as per specification, approved gtp and drawing. each gasket set consists of gasket washer as per following detail & as per sample. ( a ) gasket washer size dia od 110 mm, id 75 mm, thickness 6mm, - 03 nos. ( b ) gasket washer size dia od 50 mm, id 28mm, thickness 6 mm - 12 nos. ( c ) gasket washer size dia od 32 mm, id 12 mm, thickness 6mm - 04 nos. total 19 nos. washer pieces in one set & as per sample and enclosed drg.each set will be packed in environmental friendly poly bag. ( tolerance in size + / - 0.25 mm, negative tolerance in thickness is not allowed ) , supply of neoprene oil seals of following sizes suitable transformer made of best quality neoprene rubber as per relevant iss meant for electrical use in repairing of distribution transformer& as per approved drawing & g.t.p with following properties:- ( i ) shore hardness -38 to 42 durometer a ( ii ) tensile strength-105 kg / cm2 ( minimum ) ( iii ) ultimate elongation - 350% ( minimum ) ( iv ) size tolerance radius - ( + / - ) 1.0 mm ( v ) height & other dimension- ( + ) 0 mm, ( - ) 1.0 mm , in size m-12 suitable for lt side transformer , in size m-12 suitable for h.t side of transformer , in size m-20 suitable for l.t side of transformer