Features:
1) AT508L1: the packing is woven of strong carbon fiber after softening treatment and
impregnated with the mixture of fine graphite power, PTFE dispersion and lubricant.
Being strong, static and heat-conductive, it is widely used with revolving or
reciprocating pumps, where media of chemical corrosion and grains of particles exist
2) AT508L2 deals with PTFE inside and outside, braided from highly elastic rubber
core, the packing can escape leakage because of outside force libration