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A2025-07-22

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Spring-Energized Axial Metallic C-Seal (Open-Top Design): The Ultimate Solution for Critical Sealing Applications

Spring-Energized Axial Metallic C-Seal

In extreme operating environments—including high temperature, high pressure, aggressive chemical exposure, and vacuum conditions—conventional elastomeric seals often prove inadequate. Metallic seals demonstrate superior resilience, with the ​CA6 Spring-Energized Axial Metallic C-Seal (Open-Top Design)​​ standing as a pinnacle innovation for axial sealing applications across mission-critical industries.

Core Structure & Engineering Features

The CA6 seal combines structural rigidity with dynamic compensation:

  1. C-Shaped Metal Jacket (Open-Top)​
    • Fabricated from high-performance alloys (e.g., 316L/904L stainless steel, Inconel® 718/X-750)
    • Dual-seal mechanism formed by upward-oriented C-cross-section
  2. Helical Spring Core
    • Precision-wound spring delivers constant radial force for operational variance compensation
  3. Axial Sealing Specialization
    • Activated through axial compression via flange bolting

Performance Advantages

Characteristic Capability Specification
Pressure Resistance ≤690 bar (10,000 psi)
Temperature Range -250°C to +538°C (Inconel® alloys)
Compression Recovery >90% elastic recovery after 20% crush
Corrosion Resistance NACE MR0175 compliant for sour service
Vacuum Integrity He leak rate ≤1×10⁻⁹ mbar·L/s
Radiation Tolerance Neutron absorption <2.5 barns
Service Life >5 years (200+ thermal cycles)

Industry Applications

  • Energy Sector: BOP stacks (API 16A), nuclear reactor coolant pumps (ASME III)
  • Process Industries: Hydrocracking reactors (EN 13445), cryogenic LNG valves
  • Advanced Manufacturing: Semiconductor etching chambers (SEMI F37), aero-engine fuel systems

Installation Protocol

  1. Groove Specification: ASME B16.20 compliant (Ra≤0.8μm)
  2. Bolt Loading: Torque-angle controlled multi-stage tightening
  3. Surface Treatment: Application of MoS₂-based lubricant (film thickness ≤50μm)

[DLSEALS kindly Reminder] Sealing issues? Turn to DLSEALS! As a sealing component manufacturer, we specialize in customizing sealing components, providing a full range of services from design, research and development, production, testing, and more. If you have more information you'd like to know, feel free to contact us directly. DLSEALS's product experts are dedicated to serving you!