COMPOSITE FIBROUS PACKING MATERIAL CONTAINING FIBERS OF AROMATIC SULFIDE POLYMERS

摘要

COMPOSITE FIBROUS PACKING MATERIAL CONTAINING FIBERS OF AROMATIC SULFIDE POLYMERS A packing material of braided yarns is provided wherein the yarns have a glass and/or acrylic core and an outer layer of polyphenylene sulfide fibers, either alone or in combination with other unreactive fibers such as aramid, carbon or graphite fibers.