This Palmetto style 1347AF PTFE-impregnated synthetic compression packing seal with a petroleum-based lubricant protects pumps and valves from fluid leaks in general service applications. The interwoven braided packing seal is made of soft, flexible acrylic (Syn-Tex) yarn impregnated with a fifty-percent dispersion of virgin polytetrafluoroethylene (PTFE). PTFE fills gaps in the braid to improve sealing and protect the packing from harsh chemicals, including solvents, acids, bases, and strong oxidizers. Its low coefficient of friction reduces shaft wear by minimizing drag and heat buildup between the packing and the shaft or stem. The packing is saturated with a petroleum-based break-in lubricant that provides lubrication and sealing at initial start up to prevent overheating and glazing. It also reduces the need for frequent adjustments during break-in. The packing is non-contaminating and non-staining.
This 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 335,000, and a shaft speed of 2,300 feet per minute (fpm). It operates at temperatures from -10 to 450 degrees F (-23 to 232 degrees C). Style 1347AF is suitable for use in equipment such as centrifugal pumps, mixers, blenders, agitators, and knife gate valves, among others.
| pH range ||2-12|
| Pressure limit ||1,500 psi (103.5 bar)|
| PV factor ||335,000|
| Shaft speed ||2,300 fpm (11.7 m/s)|
|Temperature range ||-10 to 450 degrees F (-23 to 232 degrees C)|
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.