Peflon PTFE packing is a polytetrafluoroethylene material used for sealing and insulation. Also named Teflon packing rope. It provides mechanical compression for complex applications in a wide range of industries. PTFE packings are widely used in industrial equipment handling oxidizing media or corrosive chemicals.
Peflon PTFE packing can be categorized in the following ways depending on their composition:
Made of 100% polytetrafluoroethylene dispersion with excellent chemical inertness and temperature resistance.
Glass fiber-filled PTFE packing: improved mechanical strength and wear resistance.
Graphite-filled PTFE packing: Improved thermal conductivity and wear resistance.
Carbon fiber-filled PTFE packing: Increases strength and hardness while maintaining a low coefficient of friction.
Bronze-filled PTFE packing: Enhanced wear resistance and thermal conductivity.
Categorized by lubrication, PTFE packing can be divided into the following two categories:
Oiled PTFE Packing: This type of packing incorporates lubricating oil or other lubricants during the braiding of PTFE fibers.
Oil-free PTFE Packing: This packing is manufactured without any added lubricants.
The addition of lubricants improves the packing’s ability to conform to sealing surfaces, enhancing sealing performance and extending lifespan by reducing friction and wear, making it ideal for high-speed rotating equipment and high-temperature environments.
It is ideal for contamination-sensitive applications, such as food processing and the pharmaceutical industry, requiring high purity and cleanliness.
Peflon PTFE packings are extensively utilized across various industrial applications due to their outstanding chemical inertness, high-temperature resistance, low friction coefficient, and superior sealing properties. Below are some key applications of PTFE packing:
Employed for sealing pump shafts to prevent the leakage of liquids or gases.
Applied in flange seals at pipeline connections to maintain the integrity of piping systems and prevent leakage.
Used for valve stem sealing, ensuring effective sealing of media in high-pressure and high-temperature environments.
Utilized in the chemical industry for sealing storage tanks, preventing the leakage of corrosive or hazardous substances.
Used to seal piston rods and shafts in compressors, reducing friction and energy consumption.
Serves as shaft seals in mixing equipment within the food, chemical, and pharmaceutical industries, ensuring product purity and safety.
Braided PTFE Packing: Made from braided PTFE fibers, usually supplied in coils or disks, which can be cut to the size and shape required to meet specific equipment requirements. Commonly used in dynamic sealing applications for pumps and valves.
Expanded PTFE Packing: Expanded for greater flexibility and sealing performance, it is usually supplied in tape, sheet, or coil form and is widely used for sealing pipes and equipment flanges.
Material Preparation: Pure PTFE fibers are used or blended with graphite, aramid fibers, etc. to enhance properties.
Braiding: The fibers are braided into a rope or strip structure, either square or round.
Impregnation or coating: The braided packing is impregnated or coated with graphite or lubricants to enhance properties.
Forming and Cutting: The packing is formed to the required size and shape and cut to length.
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