procurement of consumables / rubber items for ntpc koldam and dadri - cord rubber : specn. & type- is:11149 neoprene 50-59 : dia- 3mm cord rubber : specn. & type- is:11149 neoprene 50-59 : dia- 4.0mm cord rubber : specn. & type- is:11149 neoprene 50-59 : dia- 5mm cord rubber : specn. & type- is:11149 neoprene 50-59 : dia- 6mm cord rubber: specn. & type : is:11149 neoprene 40 to 50 : dia : 8.0mm sheet rubber : type & grade- is:638 neoprene 50-59 : thickness- 2mm sheet rubber : type & grade : is:638 neoprene 50-59 : thickness : 3mm hardness ( irhd ) : 60+5 and _4 t.s. mpa min : 13 elongation at break % min : 250 compression set, 24 h at 70deg centigrade % max : 25 volume change, 22 h at 40 deg centigrade % max : 70 resistance to heat ageing 168 h at 70 deg centigrade ; change in t.s. % of original value, max : ( - ) 12 change in elongation at break, % of original value max : ( - ) 20 change in hardness irhd max : +7 length : 10 mtr. nitrile rubber cord size: 10.0 mm, is:11149 neoprene 50-59. note : 01 number is equivalent to 01 meter cord rubber : specn. & type : is:11149 nitrile 60-69 : dia : 12.0mm rubber cord nitrile rubber size 12 mm, smooth and fre from any defects, minimum contineous length of the cord should be more than 10 meter cord:specn. & type-nitrile 70-79:dia-d-14.0mm neoprene rubber cord, 16 mm dia nitrile 70-79 cord rubber : specn. & type- is:11149 neoprene 50-59 : dia- 6mm cord rubber: specn. & type : is:11149 neoprene 40 to 50 : dia : 8.0mm insert seal ( neoprine ) mb 2337 c for mill reject system xrp1003 mill of boiler 500 mw : coal mills : - sub system - bowl mill main assembly 15 m0579545755 oil seal 75x95x13 for t-12 / 06 fluid coupling, as per is:5129. specs 16 m0579515721 oil seal-size 65x90x10 ( for c g gear box ) type aspring loaded rubber cased seal-as per is-5129 ( part-1 ) 1987 specs : 17 m0519560301 sheet rubber : type & grade : is:638 neoprene 50-59 : thickness : 3mm hardness ( irhd ) : 60+5 and _4 t.s. mpa min : 13 elongation at break % min : 250 compression set, 24 h at 70deg centigrade % max : 25 volume change, 22 h at 40 deg centigrade % max : 70 resistance to heat ageing 168 h at 70 deg centigrade ; change in t.s. % of original value, max : ( - ) 12 change in elongation at break, % of original value max : ( - ) 20 change in hardness irhd max : +7 length : 10 mtr. 18 m0579455702 oil seal 50x72x08 mm for c 34 gear box.as per is:5129. specs : 19 m0519630301 nitrile rubber sheet:thickness-3.0mm, hardness irhd 70 + / -5, size length 1mtr, width 1mtr 20 m0519630806 nitrile rubber sheet, free from asbestos. size: 1000x1000x8mm, as per is 11149-1984 type iv class 4c. application: hv bushing, lv bushing ( silicon oil filled tr set ) 21 m0513560464 neoprene rubber washer 46 x 27 x 4 mm specs : 22 m0514100252 neoprene rubber bush 30x30x15 mm, sh50-59 specs : 23 m0519631003 self adhesive gasket, 10mm thick, size: 30mm x 10 mm x 2000 mm single side adhesive material: nitrile foam. application: marshalling box ( silicon oil filled tr set ) 24 m0565603801 o ring:i.d.80x6:neoprene:is-9975 specs : material-neoprene, class-a, shore hardness-75, max.pr.:105kg / sq.cm temperature:-30deg.c to +130deg.c, tensile strength:100to200kg / sq.cm