Pillar No. 6521L A packing made of carbonized fiber which is impregnated with the PTFE resin liquid and interlocking braided into square and then impregnated with a special lubricant after. Feature: A sister product of Style 6501L, has further been improved in its pressure-proof property and has characteristics that its sealing property is less influenced by pressure fluctuation of pump and it is stable when used for a large-sized shaft. Applications: Water, hot water, oil, solvent, weak acid, weak alkali, pumps, mixers, sterntubes. Performance: pH 2 to 12, Temp. 200℃, Press. 1.2 MPa {12.5 kgf/cm2}, Velocity 20 m/s, V value 9.8 MPa•m/s {100 kgf/cm2•m/s}