This Palmetto style 1340 PTFE-impregnated acrylic compression packing seal with yellow aramid corners protects pumps and valves from fluid leaks in general to abrasive applications. The interwoven braided packing seal is made of soft, flexible acrylic (Syn-Tex) yarn coated with a fifty-percent or more polytetrafluoroethylene (PTFE) dispersion. PTFE fills gaps in the braid to help improve sealing and protect the packing from harsh chemicals, including solvents, acids, bases, and strong oxidizers. PTFE€s low coefficient of friction helps reduce shaft wear by minimizing drag and heat buildup between the packing and the shaft or stem. The packing corners are reinforced with high tensile strength aramid yarn to help prevent abrasion and packing extrusion.

This non-contaminating packing seal is compatible with media in the pH range of 2-12, has a maximum pressure limit of 1,500 pounds per square inch (psi), a pressure-velocity (PV) factor of 375,000, and a surface speed of 2,300 feet per minute (fpm). It operates across a wide temperature range from -10 to 500 degrees F (-23 to 260 degrees C). Style 1340 is suitable for use in general to abrasive conditions involving high pressures, slurries, and salt solutions, among others.

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.