NA-1 is our special braided Teflon™ impregnated pump & valve stem packing. General service packing used for caustics, mild acids, difficult chemicals, air, gases, solvents, oils and general chemical plant applications. TNA-1 Specifications: Temperature: to +500F Ph Range: 3-11 Shaft Speed: to 1885 FPM GNA-1 is our special braided graphite impregnated packing used on rotary and reciprocating equipment. General service packing used for mild acids, alkalines, steam, brine and oil. Each individual strand is coated with graphite. The braid is surface coated with graphite. GNA-1 Specifications: Temperature: to 450F Ph Range: 4-10 Shaft Speed: to 1885 FPM