Specification of

Chestland Gland Packing Specifications 477-1Chemical Resistant Carbon Thread Packing
Chesterton 477-1T is a tough, yet flexible, filamentary carbon thread packaging
impregnated along with PTFE to provide non-contamination, non-staining
carbon yarn packaging. Developed for difficult applications in pulp and paper
industry. Series 477-1T is specifically designed for use both stationary and rotate
applications include high pressure feeders, pre-steamed vessels and applications
which drives abrasive slurry. The combined strength of carbon yarn and PTFE dispersion increases its chemical resistance to strong caustic and acidic medium.
477-1TTechnical data
Applications For use in pulp and paper, pre-steaming vessels, high and low
pressure feeders, grinding stones, hydropulators, agitators, and mixers
Pressure Limit 14 bar g (200 psig)
Shaft speed of 10 m / s (2000 fpm); 15 m / s (3000 fpm)
When used as a lower anti-extrusion ring with 1400R
Temperature Limit 260 ° C (500 ° F)
Chemical Resistance pH 0-14 except strong oxidizers