This Palmetto style 1367H PTFE compression packing seal protects pumps and valves from fluid leaks in high-pressure and chemical service applications. The interwoven braided packing seal is made of pure white virgin polytetrafluoroethylene (PTFE) filament for resistance to most harsh chemicals, including solvents, acids, and bases. PTFE’s low coefficient of friction reduces shaft wear by minimizing drag and heat buildup between the packing and the shaft. Its white color reduces the chance of staining. PTFE dispersion is impregnated into the filament before braiding to improve sealing and block leakage through the braid.

This packing seal is compatible with media in the pH range of 0-14, has a maximum pressure limit of 4,000 pounds per square inch (psi), a pressure-velocity (PV) factor of 275,000, and a shaft speed of 1,200 feet per minute (fpm). It operates at temperatures from -400 to 500 degrees F (-240 to 260 degrees C). This dense, firm packing meets specification MIL-P-24396, Type B for use in naval ships. It is suitable for use in static applications, filter presses, valve stems, rotating service as anti-extrusion end rings (with style 1367S as middle rings), and reciprocating service with high pressures and speeds.

Specifications

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.