Mechanical seal rings
The Metcar Grade M-444 is an antimony impregnated carbon-graphite primary seal ring designed for sealing refrigerants and low viscosity liquids
The Metcar Grade M-444 is an antimony impregnated carbon-graphite primary seal ring designed for sealing refrigerants and low viscosity liquids. Low viscosity liquids are difficult for mechanical seals because the hydrodynamic film that they create between the two rubbing seal faces is extremely thin. The M-444 is able to counteract this with a self-polishing feature as well as the high dimensional stability of both solid silicon carbide and antimony impregnated carbon-graphite that enables these two materials to run in the required close proximity.
Metallized Carbon Corporation
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In a year when manufacturing continued to lead the economic rebound, it makes sense that plant manager bonuses rebounded. Plant Engineering’s annual Salary Survey shows both wages and bonuses rose in 2012 after a retreat the year before.
Average salary across all job titles for plant floor management rose 3.5% to $95,446, and bonus compensation jumped to $15,162, a 4.2% increase from the 2010 level and double the 2011 total, which showed a sharp drop in bonus.