This yellow Palmetto style 1350 PTFE-impregnated aramid compression packing seal with a high-temperature inert lubricant protects pumps and valves from fluid leaks in extreme service applications. The interwoven braided packing seal is made of para-aramid filament for a high strength-to-weight-ratio, high tensile strength, and resistance to abrasive media, such as slurries. Polytetrafluoroethylene (PTFE) dispersion fills any gaps in the braid to help improve sealing and protect the packing from harsh chemicals, including solvents, acids, bases, and strong oxidizers. PTFEÃ¢ÂÂs low coefficient of friction helps reduce shaft wear by minimizing drag and heat buildup between the packing and the shaft or stem. A high-temperature inert lubricant helps improve break-in time, reduce frictional heat, and prevent the packing from spinning with the shaft or stem, reducing the chance of wear and extending the packing life.
This packing seal is compatible with media in the pH range of 3-11, has a pressure rating of 5,000 pounds per square inch (psi), and a surface speed of 2,500 feet per minute (fpm). It operates across a wide temperature range from -10 to 500 degrees F (-23 to 260 degrees C). Style 1350 is suitable for extreme service use in water, steam, oils, brines, solvents, and mild acids and caustics. It is used in high-pressure applications and equipment such as slurry pumps, sludge pumps, hydropulpers, and reciprocating pumps, among others.
| pH range
| Pressure limit
||5,000 psi (345 bar)
| Surface speed
||2,500 fpm (12.7 m/s)
| Temperature range
||-10 to 500 degrees F (-23 to 260 degrees C)
| Tensile strength
||400,000 psi (27,580 bar)
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.