High-Pressure Lip Seals for Ball Valves
High-pressure lip seals are precision-engineered sealing solutions designed for ball valve stem sealing under demanding conditions. By combining a canted coil spring with a high-performance polymer jacket, these seals provide consistent sealing force, excellent wear resistance, and reliable performance in cryogenic, high-pressure, and chemically aggressive environments.
Structure and Materials
Seal Jacket Materials: Virgin PTFE, TFM, PCTFE, PEEK
Excellent chemical resistance and thermal stability.
Low friction, suitable for dynamic sealing applications.
Long service life compared to conventional elastomers.
Spring Energizer Materials: Stainless Steel (301/304/316), Elgiloy, Hastelloy, Inconel
Provides constant sealing load across a wide range of temperatures and pressures.
Canted coil design ensures high spring load with small deflection range.
Optional Anti-Extrusion Ring:
Required when pressure exceeds 900 LBS, preventing extrusion damage to the sealing lip.
Multifunctional Design:
Integrates two seals and a guide bearing into a single component.
Bi-directional sealing for medium temperature and pressure.
Can also act as a floating piston when designed without an inner diameter.
Performance and Applications
Suitable for static, reciprocating, and rotary sealing.
Recommended for ball valve stem seals, floating pistons, and dynamic sealing in LNG and oil & gas equipment.
Provides reliable sealing in cryogenic, high-pressure, and high-cycle applications.
Advantages
Material compound passed API 6A FF/HH Immersion Testing.
High-load canted coil spring with small deflection range.
NACE-approved energizers for oil & gas applications.
Quick assembly and replacement design, reducing maintenance time.
Superior sealing performance under thermal cycling and high-pressure fluctuations.
Working Conditions
Temperature range: –50℃ to +200℃
Pressure ratings: 150LB, 300LB, 600LB, 900LB, 1500LB, 2500LB
Mediums: LNG, low-temperature ethylene, hydrocarbons, industrial gases
Applications
High-pressure ball valve stem seals
LNG fueling and transfer systems
Cryogenic valves and pumps
Oil & gas pipeline ball valves
Petrochemical and chemical processing equipment
