Catalog excerpts
477-1 Strong, yet pliable, continuous filament carbon yarn Unique inorganic blocking agent stops gas/liquid penetration Molybdenum based corrosion inhibitor prevents stem pitting CHESTERTON® 477-1 is designed for general valve services in steam, water, solvents, acids and alkalies to 1,050°F (565°C ), 3,600 psi ( 250 bar), and pH 0 –13. It can be used in shaft or rod services to speeds of 3,000 fpm (15 m/sec ). CHESTERTON 477-1 has the highest percentage of carbon of all major competitors for less consolidation and more reliable service up to pressure and temperature limits. Higher quality carbon precursors make 477-1 easier to braid without fraying or fiber damages. Brands A, B, C and D require more sizing agents to assist in the braiding of lower quality, more brittle carbon fibers. B
Open the catalog to page 1CHESTERTONl 477-1 General Service Valve Packing CHESTERTON® 477-1 carbon fiber packing combines a new yarn formulation with superior blocking agents. New low modulus yarn provides the strength associated with continuous filament carbon fibers plus greater flexibility. This makes 477-1 strong yet pliable, without the brittleness of conventional carbon packing. 477-1 incorporates a high purity dispersion of inorganic platelets which prevent penetration of gases or liquids through the packing. Interbraid construction locks these blocking agents within the packing ring. Valve Services ■ Steam...
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