Polytetrafluoroethylene (PTFE) with Carbon-Graphite Fill is a specialized material designed for demanding applications involving aqueous fluid media. Its unique properties make it suitable for high-temperature environments, offering excellent wear resistance and chemical compatibility. The material's black color and operational range from -250 to 600°F highlight its versatility, while its low mating metal wear ensures longevity in dynamic applications. These characteristics make it a preferred choice for industries requiring durable and reliable materials in fluid handling systems.
Key Points Explained:
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Material Composition and Appearance:
- PTFE with Carbon-Graphite Fill is a composite material where PTFE is reinforced with carbon-graphite particles. This combination enhances the base properties of PTFE, such as its non-stick nature and chemical inertness.
- The material is black in color due to the carbon-graphite filler, which also contributes to its improved mechanical properties.
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Temperature Range:
- The material operates effectively between -250 to 600 degrees Fahrenheit, making it suitable for both cryogenic and high-temperature applications. This broad range ensures performance stability in varying environmental conditions.
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Wear Resistance:
- With a wear resistance rating of 3-4 (depending on the specific formulation), PTFE with Carbon-Graphite Fill excels in applications where friction and abrasion are concerns. The carbon-graphite filler significantly reduces wear, extending the material's lifespan.
- For applications requiring even higher wear resistance, consider PTFE mat alternatives with additional premium fillers.
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Low Mating Metal Wear:
- The material's low mating metal wear property minimizes damage to opposing surfaces, which is crucial in dynamic applications like seals and bearings. This characteristic reduces maintenance costs and downtime.
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Chemical Compatibility:
- PTFE with Carbon-Graphite Fill exhibits high chemical compatibility, especially in humid conditions and fluid applications. It resists degradation from most aqueous media, acids, and bases, making it ideal for chemical processing industries.
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Applications in Aqueous Fluid Media:
- The material's resistance to water and other fluids makes it a top choice for pumps, valves, and seals in water treatment, pharmaceutical, and food processing industries.
- Its ability to perform under high-speed reciprocating or rotary motions further broadens its applicability in fluid handling systems.
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Performance Variants:
- Some formulations include additional premium fillers, enhancing wear characteristics and reducing the coefficient of friction. These variants are particularly suited for high-speed applications.
- The operational temperature and wear resistance can vary slightly based on the specific filler composition, so it's essential to select the right grade for your application.
Summary Table:
| Property | Description |
|---|---|
| Material Composition | PTFE reinforced with carbon-graphite particles, black in color. |
| Temperature Range | -250°F to 600°F, suitable for cryogenic and high-temperature environments. |
| Wear Resistance | Rated 3-4, excellent for high-friction applications. |
| Low Mating Metal Wear | Minimizes damage to opposing surfaces, ideal for dynamic applications. |
| Chemical Compatibility | Resistant to aqueous media, acids, and bases. |
| Applications | Pumps, valves, seals in water treatment, pharmaceuticals, and food processing. |
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