... ,hot air,oils,can be used for pumps and valve Glass fiber packing with graphite impregnation SpecificationDescription:Square ... braided from E-glass fiber impregnated with graphite. Normal for valves. 2021 is fiberglass packing reinforced ... Nickel wire and lubricated by graphiteApplicationAs a static seal for vessels, heaters, manhole, lids, covers, thermal insulation ...