Specifications:1) GR101 / 20 / 301 / 401 are acid cure gasket maker2) GR101, red gasket maker, use on automobile / motor cycle's engine, valve, and such joint cover of rigid flange3) GR201, black gasket maker, instant dry, same use like GR1014) GR301, grey gasket maker, same use like GR1015) GR401, blue gasket maker, same use like GR101 and spcial recommended for oil shell bottom cushion, pump cushion, gear-box botton cushion6) GR601 / 602 / 630 are neutral cure gasket maker7) GR601, red gasket maker, spcial recommended for high temperature places in the industry, heating pipeline, high-temp reactor8) GR602, black gasket maker, use on bonding and sealing for gas engine parts and other machinery, surface sealing for auto and machines9) GR603, blue gasket maker, use on various machines and electric equipment producing area:China