Spring Energized Seals for Ball Valves
Spring energized seals for ball valves are advanced sealing solutions designed for rod and dynamic sealing applications in demanding industries such as oil & gas, LNG, and cryogenics. By combining a helical wound spring with a polymer jacket, these seals deliver consistent sealing force, high wear resistance, and reliable performance under extreme conditions where standard polymer seals fail.
Structure and Materials
Seal Jacket Materials: Virgin PTFE, filled PTFE, UHMW-PE, PEEK
Excellent chemical resistance and thermal stability
Low friction coefficient, ensuring smooth operation
Long-term dimensional stability under extreme pressures and temperatures
Spring Energizer Materials: Stainless Steel, Elgiloy, Hastelloy
Provides uniform sealing load across varying temperatures and pressures
High fatigue resistance, suitable for cryogenic and corrosive environments
Lip Profile Design:
Rounded lip profile for easier installation
Available in a wide range of cross-sections and diameters
Can be customized to fit closed grooves and special cavity geometries
Key Considerations for Selection
When determining whether to use standard polymer seals or spring energized seals, the following factors must be evaluated:
Temperature (maximum/minimum operating range)
Working pressure (system operating and peak pressure)
Speed (dynamic sealing movement)
Medium compatibility (especially with corrosive fluids and gases)
Friction and wear requirements
Environmental factors (abrasion, cryogenic conditions, vacuum)
Equipment application and operational cycles
Sealing cavity structure and groove design
Advantages
Material compound passed API 6A FF/HH Immersion Testing
High-load helical wound spring with small deflection range
Small elastic deformation, suitable for closed grooves
Rounded lip profile enables easy assembly
Wide range of cross-sections and diameters available
NACE-approved energizers for oil and gas service
Working Conditions
Temperature range: –50℃ to +200℃
Pressure ratings: 150LB, 300LB, 600LB, 900LB, 1500LB, 2500LB
Mediums: Gas, water, LNG, hydrocarbons
Applications
Ball valve rod seals
Cryogenic valves and pumps
Oil & gas exploration equipment
LNG transfer systems
High-pressure industrial valves
