XIN CHENG INDUSTRY MATERIAL CO., LTD.  

Product Name: Cork Gasket O Ring for Transformer /Cork Gasket Insulation Sheet Model NO.: o ring Color: Brown Certification: UL Classification: Hybrid Insulation Materials Maximum Voltage: >100KV Thermal Rating: E 120 Material: Silicone Chemistry: Hybrid Insulation Type: O Ring Application: Electrical Winding Insulation, Winding Wire Coating Insulation Colour: Brown Usegae: Transformer Seal Trademark: xincheng Transport Package: Pallets Specification: according to customer requirments Origin: China Product Description Cork GasketSealing material is compounded with Nitrite (NBR)rubber.This product is suitable for most transformer oils at applicationDate sheetSerialnumberTest projectIndexThe test results1Hardness (Shore)80±10 822Tensile strong No less than (MPA02.5 5 3Permanent compression deformationCompression ratio25%70ºC×22h Not more than %55384Aging in hot air (100ºC×70h) The hardness changeWeight change %0~+10-10~0 4 -2.85water-tolerant (100ºC×1h )Volume change %-10~+151.86Resistance to 1# standard oil( 70ºC×22h) The hardness changeVolume change %-10~+100~+10 23.27Volatile oil standard B (23ºC×24h)The hardness changeVolume change %20~00~60 -10 308Temperature index-20ºCto 120ºC