PTFE seals are designed with various spring load ratings to accommodate different operational requirements, primarily focusing on linear friction or torque control. The available spring types include cantilever/V springs and canted coil springs, each offering light, medium, or heavy load ratings. These options ensure optimal performance in diverse applications, leveraging PTFE's low friction and chemical resistance properties.
Key Points Explained:
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Spring Types in PTFE Seals
- Cantilever/V Springs: These are common in ptfe seals, providing consistent radial force to maintain seal contact.
- Canted Coil Springs: Offer reduced lip loading, ideal for dynamic applications where friction minimization is critical.
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Load Rating Categories
- Light Load: Suitable for low-pressure or low-friction applications, preserving seal longevity.
- Medium Load: Balances friction and sealing efficiency for moderate operational demands.
- Heavy Load: Designed for high-pressure or high-torque environments, ensuring robust performance.
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Functional Benefits
- Friction Control: Springs adjust lip pressure to match specific torque or linear motion needs.
- Chemical Resistance: PTFE’s inherent properties remain unaffected by spring choice, maintaining compatibility with aggressive media.
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Selection Considerations
- Assess operational pressure, speed, and environmental conditions to determine the optimal spring type and load rating.
- Canted coil springs may be preferred for applications requiring reduced wear or smoother motion.
By aligning spring load ratings with application demands, PTFE seals deliver reliable performance across industries like aerospace, automotive, and chemical processing.
Summary Table:
| Spring Type | Load Rating | Best For |
|---|---|---|
| Cantilever/V Springs | Light | Low-pressure, low-friction applications (preserves seal longevity) |
| Cantilever/V Springs | Medium | Moderate operational demands (balances friction & sealing efficiency) |
| Cantilever/V Springs | Heavy | High-pressure/high-torque environments (ensures robust performance) |
| Canted Coil Springs | Light/Medium | Dynamic applications requiring reduced wear or smoother motion |
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