Woven from Kevlar aramid fiber packing impregnated with PTFE emulsion and lubricant treatment from. Has good chemical resistance, high resilience, low cold flow. Excellent high speed, high modulus (called artificial wire) which is three times the strength of the wire, the wire than five times lighter weight. Therefore, comparison with other types of packing, the crystallization medium and the particles can resist higher temperatures may be used either alone or in combination with other packing. On the pump system is a good alternative to asbestos.