fiberglass packing braided by texturized glass fibre yarns. Used as heat-insulating materials, and also an excellent subs E-glass fiber packing  is braided by texturized glass fibre yarns. Used as heat-insulating materials, and also an excellent substitute for asbestos packing. AP2509 is static sealing packing which is braided high quality E-glass fiber without ant impregnant,without any flammability component.