1.Aramid(Nomex) 2.good dust collector 3. PTFE bathing ... normal temperature circumstance(under 150 C), the polyester needle felt will satisfy the bag filter systems, if the temperature ... gas/fume, the acid dew will exist. Aramid needle felt, besides equip the ability of spinnability, abrasion resistance, they ... a good dimensional stability, long service life. Aramid(Nomex) needle felt for dust collector