... -resistantBearing,gasket,valve seat,liner and other mechanical and electronic use2030Graphite15Anti-corrosion,low frictionand creep- ... conductivityPlunger ring,supporting gasket and other bearing mechanical use40404040(S)Hard carbonSoft carbon20Creep resistant,low ... fiber15Creep-resistant,tolerance set and anti-abrasionBearing and mechanical seal,gasket,etc.7040PPOB20Anti-abrasion,low friction and ...