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Spring Energized Seals for API 6D Ball Valves
High-performance sealing solution engineered for critical rod and dynamic applications in Oil & Gas, LNG, and Cryogenic services. These seals combine a high-load helical wound spring with a precision-machined polymer jacket to maintain consistent sealing force where standard elastomers fail due to extreme temperatures or chemical degradation.
Technical Specifications
| Parameter | Specification | Industry Standards |
| Pressure Rating | ASME/API Class 150LB – 2500LB | API 6D / API 6A |
| Temperature Range | -50°C to +200°C (-58°F to +392°F) | Cryogenic & Thermal cycling |
| Compliance | API 6A FF/HH Immersion Tested | NACE MR0175 / ISO 15156 |
| Media | LNG, Hydrocarbons, Sour Gas (H₂S), Steam | Chemical Compatibility |
Material Engineering
- Jacket: Virgin PTFE, Carbon/Glass/Bronze-filled PTFE, PEEK, UHMW-PE.
- Spring Energizer: 300-series Stainless Steel, Elgiloy®, Hastelloy® (NACE-compliant for corrosive sour gas).
Design Features
- Helical Wound Spring: Optimized for high-load applications with a small deflection range, ensuring zero-leakage in static and slow-speed dynamic valve stems.
- Rounded Lip Profile: Facilitates easier installation and prevents seal lip damage in closed or stepped grooves.
- Low Friction: Eliminates stick-slip during valve actuation, ensuring smooth operation under high torque.
Applications
- Ball Valve Systems: Primary seal for valve stems and seats in API 6D/6A valves.
- Cryogenic Equipment: Sealing for LNG loading arms, pumps, and cryogenic storage tanks.
- Oil & Gas Exploration: Downhole tools, wellheads, and subsea manifolds.
- Hydrogen Energy: High-pressure sealing for hydrogen storage and transport systems.
- Chemical Processing: Critical isolation valves handling aggressive solvents or acids.
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