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ARCO Board is a Arc & Heat Resistant Non ignitable Board manufactured from special grade asbestos Fibre and Cement under very heavy pressure and has high mechanical strength even at high temperature,high are resistance property, relatively low thermal conductivity,low arc tracking,high heat resistance,alkali resistance and electrical insulating properties.It is light grey in colour.
ARCO Board Natural Grade has relatively high water absorption capacity and they are not mormally used for primary electrical insulatior.purpose where high % of moisture are expected in atmosphere.For the use in moist atmosphere sillcone Varnish Imprignoted Grade of ARCO Board is available.silliconeImprignated Boards are distinshed from unimprignated Boards by their ability.