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477-1Continuous filament carbon yarnChesterton 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) |
| | Chemical Resistance | pH 0-13 except oleum, fuming nitric acid, aqua regina, and fluorine |
| | Pressure Limit | 250 bar g (3600 psig) in valves. 14 bar (200 psig) in rotating equipment |
| | Shaft Speed | 15 m/sec (3000 fpm) |
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