Gland Packing Chesterton Carbon Yarn 477-1
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.
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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