Metcar mechanical seal primary rings and seal faces are manufactured using engineered carbon-graphite materials
Metallized Carbon Corporation offers Metcar mechanical seal primary rings and seal faces, which are manufactured using highly engineered carbon-graphite materials.
Antimony impregnated grades manufactured by Metcar are favored for running in volatile hydrocarbons where ordinary resin impregnated carbon-graphite grades would blister. Metcar antimony impregnated grades offer high modulus of elasticity and improved self-lubricating properties that are well suited for non-contacting, “lift off” seals. Nickel chrome impregnated grades are favored for extremely high pressure, liquid lubricated, “lift off” seals because of their high modulus of elasticity and their high tensile strength. Metcar grades with special film control additives are used to reduce the wear rate of seal rings running in humid air, dry nitrogen and vacuum.
Mechanical seal primary seal rings from Metcar are manufactured to customer-supplied drawings. Dimensional tolerances as close as 0.0005 inch can be held, and seal rings can be lapped and polished to one Helium light band flatness. Finish machined mechanical seal rings or seal faces are tested to assure they are impervious to at least 100 psi gas pressure.