This Palmetto style 5000 flexible graphite compression packing seal with an anti-corrosion additive protects pumps and valves from fluid leaks in static and dynamic applications. The braided packing seal is made of pure expanded flexible graphite braided yarn (Flexi-Braid) for high shaft speeds, a low coefficient of friction in both low and high temperatures, and resistance to harsh chemicals and high temperatures. It transfers heat away from the shaft to prevent glazing and scoring, reducing leakage and extending the packing and sleeve life. It is resilient and conforms to surfaces when compressed to improve sealing. Flexible graphite resists breaking down in use; it becomes denser with each gland follower adjustment. An anti-corrosion ingredient is added to the packing to reduce the chance of pitting. The packing is nontoxic in accordance with the United States Environmental Protection Agency’s (EPA) maximum concentration of contaminants list.
This packing seal is compatible with media in the pH range of 0-14, except fuming nitric acid, aqua regia, and oleum. It has a maximum pressure limit of 2,500 pounds per square inch (psi) in valves and 125 psi in pumps. It operates at temperatures from -400 degrees F up to 1,200 degrees F in steam, 850 degrees F in oxidizing atmospheres, and 6,000 degrees F in non-oxidizing atmospheres. Style 5000 is suitable for use with low-pressure steam valves and pumps, boiler feed pumps, expansion joints, and high-temperature groove packing, among others.
| pH range || 0-14, except fuming nitric acid, aqua regia, and oleum |
| Pressure limit in pumps || 125 psi (8.5 bar) |
| Pressure limit in valves ||2,500 psi (172 bar)|
| Temperature range in non-oxidizing atmospheres || -400 to 6,000 degrees F (-240 to 3,300 degrees C)|
| Temperature range in oxidizing atmospheres || -400 to 850 degrees F (-240 to 454 degrees C) |
| Temperature range in steam || -400 to 1,200 degrees F (-240 to 649 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.