Naturalflakegraphiteafterscreeningasacidcleaningandintreatment,thetreatedgraphiteexpansionmorethan100times,flotationwaspressedintothegraphitepaper,thatis,flexiblegraphite　　flexiblegraphiteismainlyusedforsealingindustry,flexiblegraphitesheetismainlyusedforelectricpower,petroleum,chemicalindustry,flexiblegraphitepaperintheseindustriesismainlyusedinmachine,pipe,pump,valveseal　　Graphitefoilisanewsealingmaterialfoundation,hashightemperatureresistance,corrosionresistance,radiationresistance,goodtheelectricalconductivityandthermalconductivity,goodcompressionrate,reboundrateandlowstressrelaxationratecharacteristics　　Graphitefoil:graphitefoilandgraphitesheetisusedformachinesealing,.　　Graphitetape:graphitetapeisusedforthreadsealingandsealingflange.　　Graphitefoilwithglue:graphitefoilandtapewithgluemainlyusedforthreadandflangesealing.ParametersItemGraphitefoilGraphitestrengthedsheet304Graphitestrengthedsheet316Carboncontent(%)95~99.9allavailable≥99≥99SpecificResistance(μΩ-m)3~7 3~7Sulfurcontent(ppm)0~1200allavailable≤1100≤1200Chlorincontent(ppm)≤35≤50≤40CompressiveStrength(Mpa)≥160  FlexuralStrength(Mpa)≥4.5  TensileStrength(Mpa) ≥40≥40Density(g/cm3)1+-0.051.25+-0.051.25+-0.05Compressingmodulus≥40%30~35%30~35%Reboundingmodulus 10~12%19%