Specification of
Chesterton 477-1 Multi-Purpose Packing
CHESTERTON 477-1T Non Asbestos Gland Packing
Carbon / PTFE
Chesterton 477-1T is a tough, but flexible packaging carbon filament yarn
impregnated along with PTFE to provide non-contamination, non-coloring
carbon yarn packaging. 477-1T was developed for applications that are difficult in pulp and
paper industry. It is specifically designed for use in high pressure, pre-loading feeders
vessels and applications that drive abrasive mud. That
the combination of carbon yarn and PTFE dispersion increases the chemical 477-1T
resistance when facing caustic media and strong acids.
477-1T is also an excellent bottom anti-extrusion end ring combined with
1400R in rotating equipment. This combination is ideal when trying to reduce
or remove water flush from the filling box.
Technical data
Temperature limit:
260 ° C (500 ° F)
Pressure limit:
14 bar g (200 psig)
Shaft Speed:
10 m / s (2000 fpm)
15 m / s (3000 fpm) when used as
bottom anti-extrusion ring
with 1400R
Chemical resistance:
pH 0 to 14 except strongly
oxidizer
Application:
Paper pulp and paper, pre-steamed
ship, high and low pressure
feeders, grinding stones,
hydropulpers, agitators
and Non Asbestos Gland Packing
