Continuous filament carbon yarn
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 packings. 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.
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| Temperature Limit |
565°C (1050°F)
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| Chemical Resistance |
pH 0-13 except oleum, fuming nitric acid, aqua regina, and fluorine |
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| Pressure Limit |
250 bar g (3600 psig) in valves. 14 bar (200 psig) in rotating equipment |
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| Shaft Speed |
15 m/sec (3000 fpm)
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