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1/10/2012

Mechanical Seal Rings For High-Speed/High-Load Applications

Metallized Carbon Corporation offers mechanical seal primary rings and seal faces manufactured to specifications using highly engineered carbon-graphite materials. The mechanical seal rings are used for sealing liquids such as water, hot water, acids, alkalis, fuels, oils, heat-transfer fluids, liquefied gases, solvents, and beverages. They are also used for sealing gases such as air, hot air, steam, inert gases, and dry nitrogen. Antimony impregnated grades manufactured by Metcar can be used for running in volatile hydrocarbons where ordinary resin impregnated carbon-graphite grades would blister. Metcar antimony impregnated grades offer high modulus of elasticity and self-lubricating properties, for non-contacting, “lift-off” seals. Nickel chrome impregnated grades are used 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 are manufactured to customer-supplied drawings. Dimensional tolerances as close as 0.0005 inches 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. – metcar.com


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