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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
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