**Palmetto 1578 Series Carbon Fiber PTFE Coated Compression Packing Seal - 9/16" Square, 5' Length - Ideal for High-Temperature Valves, Pumps, and Industrial Machinery**

This Palmetto style 1578 carbon compression packing seal with a PTFE coating protects pumps and valves from fluid leaks in high-speed, high-temperature applications. The interwoven braided packing seal is made of carbon polyacrylonitrile (PAN) continuous filament for high tensile strength and stiffness, thermal conductivity, and resistance to abrasive media and harsh chemicals. Carbon also tolerates high temperatures and exhibits a low coefficient of friction for reduced wear on the shaft. The polytetrafluoroethylene (PTFE) coating fills any gaps in the braid to improve sealing and protect the packing from harsh chemicals, including solvents, acids, bases, and strong oxidizers. PTFE’s low coefficient of friction reduces shaft wear by minimizing drag and heat buildup between the packing and the shaft or stem. This packing seal is compatible with media in a wide pH range of 0-14, has a maximum pressure limit of 2,500 pounds per square inch (psi) in valves and 500 psi in pumps, and a shaft speed of 4,000 feet per minute (fpm). It operates to a maximum temperature of 650 degrees F (340 degrees C). Style 1578 is suitable for use with slurries found in industries such as pulp and paper, chemical, petrochemical, and mining, among others.Specifications Maximum temperature 650 degrees F (340 degrees C) pH range 0-14 Pressure limit in pumps 500 psi (35 bar) Pressure limit in valves 2,500 psi (172.5 bar) Shaft speed 4,000 fpm (20 m/s)Rope seals provide a pressure seal to help retain fluids and gases in a wide variety of commercial and industrial applications. They have a round, square, or rectangular cross section, and come in various braided designs including braid-over-braid, braid-over-core, laminated, twisted, or interwoven. Rope seals can be manufactured from a single material or a combination of materials that suit specific pressure, temperature, speed, and chemical applications. Some rope seals are impregnated with lubricant and have reinforced cores for improved performance in specific environments, such as extremely high temperatures. They can be used to create a static seal in fixed or slow-moving applications like expansion joints, doors, and valves, or a dynamic seal in equipment with reciprocating, rotating, or oscillating movement like centrifugal pumps, rotating stems, and blowers. Rope seals come in uncut lengths on spools or as precut molded rings. They are used in numerous industries including agriculture, oil and gas, automotive, aerospace, construction, and consumer goods.Palmetto Inc. manufactures packing products for pumps and valves, such as compression packing seals, packing tools, gasket sheets, and fillers. The company, founded in 1872, is headquartered in Denton, MD.