Valve Seat Face Sealing Rings

Commercial Terms of Products:

Overview

Tesel Seal provides high-performance valve seat face sealing rings engineered for API 6A gate valve applications in demanding oil, gas, and petrochemical environments.

Designed with a PEEK jacket, V-shaped stainless steel or alloy spring, and PTFE support ring, these seals ensure reliable performance under pressures up to 20,000 psi and temperatures from -60°C to 200°C.

Resistant to H2S and CO2, they are widely used in wellheads, valves, and offshore systems. Custom sealing solutions are available based on your operating conditions.

Technical Specifications 

Key Features and Performance Advantages

• Wide Temperature Capability – Reliable sealing from -60°C to 200°C, suitable for both low-temperature and high-temperature processes.

 
• High Pressure Performance – Withstands pressures up to 20,000 psi for critical gate valve applications.

 
• Dual-Ring Multi-Lip Design – Inward- and outward-facing rings create multiple sealing interfaces, enhancing redundancy.

 
• Spring-Energized Sealing – V-shaped alloy springs maintain continuous radial sealing force to compensate for wear, thermal expansion, and pressure fluctuations.

 
• Anti-Extrusion Protection – PTFE support rings combined with backup elements prevent extrusion under extreme pressure.

 
• Structural Stability – Top support rings stabilize the assembly and prevent deformation.

 
• Chemical Resistance – PEEK jackets and PTFE support rings resist hydrocarbons, H2S, CO2, and other aggressive chemicals.

 
• Low Friction & Extended Service Life – Reduced wear on mating surfaces, improving reliability and reducing maintenance frequency.

Product Structure and Design

Tesel Seal valve seat face sealing rings are designed as dual-ring composite assemblies: 

• PEEK sealing jacket for primary sealing and chemical resistance
• Stainless steel or alloy V-shaped spring for continuous radial sealing force
• PTFE support ring for low friction and structural integrity
• Inward- and outward-facing lips forming complementary sealing interfaces

The multi-component design ensures effective sealing even in dynamic, high-pressure environments. Multi-lip redundancy reduces leakage risk and guarantees stable performance over extended service life.

Applications

Tesel Seal valve seat face sealing rings are widely used in oil, gas, petrochemical, and LNG sectors:

• API 6A Gate Valves – Ensure leak-tight sealing at valve seat interfaces in high-pressure systems.
• Upstream Production Equipment – Applied in wellheads and drilling operations to prevent hydrocarbon leakage.
• Offshore Platforms – Reliable under harsh environmental conditions including saltwater, temperature variations, and corrosion.
• Petrochemical Systems – Withstand aggressive media and elevated temperature processes in pumps and valves.
• LNG and Cryogenic Valves – Maintain sealing integrity in low-temperature applications despite thermal contraction.
• Process Control Systems – Provides precise fluid regulation and safe operation in control valves and pipelines.

Design Considerations

When selecting valve seat face sealing rings:

• Pressure conditions – Maximum operating pressure and pressure cycling to prevent extrusion.
• Temperature range – Include cryogenic and high-temperature conditions.
• Media compatibility – Hydrocarbons, H2S, CO2, and chemical additives.
• Performance requirements – API 6A standard and desired redundancy.
• Sealing structure – Multi-lip designs recommended for critical/high-pressure service.
• Installation constraints – Valve geometry, gland depth, and assembly space considerations.

Failure Analysis and Optimization

• Extrusion Under High Pressure – Backup rings prevent deformation into clearance gaps under extreme pressures.
• Wear of PTFE Components – Dynamic operation can cause wear; material choice and spring energization reduce degradation.
• Thermal Fatigue – Multi-lip design distributes stress, mitigating micro-cracks and elasticity loss from temperature cycling.
• Chemical Degradation – PEEK jackets and PTFE support rings provide resistance against H2S, CO2, and hydrocarbons.
• Misalignment or Installation Errors – Precise tolerances and guidance from Tesel Seal ensure proper sealing efficiency.

Optimization requires correct material selection, multi-lip configuration, and field validation under actual operating conditions.

Common Questions and Answers

• Why use dual-lip rings? – Multiple sealing interfaces improve redundancy, reduce leakage, and enhance safety margins.
• Are these suitable for H2S/CO2 environments? – Yes. PEEK and PTFE provide corrosion and chemical resistance.
• Can they handle extreme pressure? – Rated up to 20,000 psi in API 6A applications with backup rings preventing extrusion.
• Is customization available? – Yes. Tesel Seal can tailor seals for specific valve dimensions, media, and performance.

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