Chesterton 477-1 Multi-Purpose Packing

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Chesterton 477-1 Multi-Purpose Packing
Innovative PTFE-Coated Carbon Yarn Formulation


​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​This carbon fiber packing combines a new yarn formulation with superior blocking agents for sealing pumps and valves with one packing.

  • New low-modulus yarn provides the strength associated with continuous filament carbon fibers, plus greater flexibility
  • Strong yet pli​able, without the brittleness of conventional carbon packings
  • 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
Strong yet pliable, continuous-filament carbon yarn
Unique inorganic blocking agent stops gas/liquid penetration
Molybdenum-based corrosion inhibitor prevents stem pitting​
For use in valve and pumps
Seals most solvents, gases, and other fluids
Technical Data
Temperature Limit 565°C (1050°F)
Pressure Limit 250 bar g (3600 psig) in valve applications 14 bar g (200 psig) in pump applications
Shaft Speed15 m/s (3000 fpm)
Chemical ResistancepH 0 to 13 except oleum, fuming nitric acid, aqua regia,and fluorine
ApplicationsVirtually all pumps and valves against most solvents, gases,and other liquids



SDS: 477-1 (English) 477-1 (English)pdf
Installation Instructions: 477-1 (English) Instructions: 477-1 (English)pdf
SDS: 477-1 (Deutsch) 477-1 (Deutsch)pdf
SDS: 477-1 (Francais) 477-1 (Francais)pdf
SDS: 477-1 (Portugues) 477-1 (Portugues)pdf



Catalog: Chesterton Packing and Gasket Product Catalog (English) Chesterton Packing and Gasket Product Catalog (English)pdf
Brochure: 477-1: Strong, yet Pliable Continuous Filament Carbon Yarn (English) 477-1: Strong, yet Pliable Continuous Filament Carbon Yarn (English)pdf
Article: Stationary - Reliable Flange Sealing Flange Sealing.pdfArticle: Stationary - Reliable Flange Sealingpdf
Catalog: Chesterton Valve Packing (Nihongo) Chesterton Valve Packing (Nihongo)pdf
Catalog: Mechanical Packing and Gaskets (Espanol) Mechanical Packing and Gaskets (Espanol)pdf