supply of silica gel breather of different size ( 2 ) supply of ms pipe band j type suitable for silica gel breather and as per specification , silica gel breather made of high quality unbreakable polycarbonate suitable for 25 kva to 100 kva transformers having width of oil filling capacity 50 mm top side capacity 40mm bottom side . the top cover made of aluminium with niytrial rubber in aluminium top cover . poly green id-60mm , od 64 mm including 100 gm silica gel and confirming to relevant is with latest amendment . , aluminium silica gel breather , 500 gms , suitable for 250 kva to 630 kva transformers having following details including silica gel and confirming to relevant is with latest amendment . ( i ) alu body and aly cover should be in pressure die casting . ( ii ) total height of breather: 220 mm ( iii ) width of breather with top cover : 128 mm ( iv ) silical gel should be 500 gms ( v ) silica gel should be in dark blue colour and size 3 / 5 mesh , bulk density 70 gm / cc ( vi ) long window glass to view silica gel . , ms pipe ms pipe band ( j type ) suitable for silica gel breather of transformer id 18mm , od 21mm , weight about 200 gm . and confirming to relevant is with latest amendment