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Metal C-Ring Seal

Blade Metal C-Ring Seal Spring-Energized
Typical Applications
Research & Advanced Science
Fusion Research Particle Accelerators Superconducting Magnets
Semiconductor & Vacuum
Vacuum Semiconductor Equipment PVD/CVD/Etch Equipment Chamber Lids Exhaust Lines
Aerospace & Defense
Satellite Systems Laser & RF Guidance Systems Electronic Enclosures
Fluid & Gas Systems
Flow Control Valves High-Purity Gas/Chemical Delivery
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Product Description

The BCSE seal, professionally designated as the Blade Type Spring Energized Metal C-Ring Seal, represents a specialized evolution of high-performance metallic sealing technology. This seal is specifically engineered for Ultra-High Purity (UHP) and Ultra-High Vacuum (UHV) applications where the highest possible degree of leak tightness is required at significantly reduced seating loads.

Functional Sealing Mechanism: The unique "knife edge" ridges on the seal face utilize a dual-action principle.
1. Viscoplastic Deformation: Load is concentrated on ridges, causing the ductile plating to fill microscopic imperfections.
2. Elastic Resiliency: A helical spring core provides consistent energy and springback to accommodate thermal cycling.

Due to the concentrated contact area of the ridges, the BCSE seal requires less load to achieve sealing compared to standard metal seals. It serves as a superior high-performance replacement for elastomer O-rings in quartz, ceramic, and standard ISO/PNEUROP flanges.

Temp
Op. Temperature
-270°C ~ +750°C
Pressure
Work Pressure
UHV to 1500 Bar
Media
Suitable Media
Oil, Water, Gas
Leakage
Leakage Rate
≤1E-12 Pa·m³/s
Material
Materials
Alloy 718 / 316L / Alu
Specifications & Options
Outer Diameter Range
7mm to 304mm
Cross Section Range
2.0mm to 6.7mm
Product Shapes
Round, Rectangular, Racetrack
(Customized shapes available)
Pressure Direction
Internal & External
Core Materials
Alloy 718, X-750, 316 SS, 321 SS, Waspaloy
Plating (Crucial for BCSE)
Aluminum, Silver, Gold, Copper, Soft Nickel
Special Design
Blade Type / Knife Edge
Concentrates load for better sealing
Seating Load
Reduced Load (~80 N/mm)
Ideal for fragile flanges
Warranty
3-year warranty period
Key Application Characteristics
Ultimate Sealing Performance
  • Ultra-low leak rates: Achieves < 1E-13 atm·cm³/s He.
  • UHP & UHV Ready: Perfect for Ultra-High Purity and Vacuum applications.
  • Low Outgassing: Essential for high-purity environments.
  • High Temp Bake-out: Withstands rigorous cleaning cycles.
Design Versatility & Load
  • Reduced Seating Load: Seals with loads as low as 80 N/mm.
  • Broad Compatibility: Seals on Quartz, Ceramic, and Aluminum flanges.
  • Wide Size Range: From 3.8 mm up to 2000 mm diameter.
  • Flexible Shapes: Suitable for odd and custom geometries.
Environmental Reliability
  • Wide Temp Range: Operates from 1.8K (Cryogenic) to >600°C.
  • Long Life Expectancy: Durable metal construction.
  • Remote Handling: Capable of robotic/remote installation.
  • Diverse Industries: Accelerators, Fusion, CVD/PVD, Gas Delivery.
Why Choose Sonkit Industry?
Sonkit specializes in metallic seals, serving customers from diverse industries worldwide, including Global Fortune 500 Companies.
Design & Engineering Support
  • Experienced research and technical support team
  • In-house test labs for high-quality control
  • Stable and reliable electroplating & customized heating process
  • Close co-operation with renowned universities and research institutes
  • Quick Response Time & Experience serving Top 500 Enterprises
Rigorous Quality Assurance
  • 100% weldment strength test
  • Static Pressure test up to 100 MPa
  • Helium leak detection report (≤1E-10 Pa·m³/s)
  • Coating thickness detection & Digital size inspection
  • Full inspection reports provided as required
Sonkit Metallic Seal Facility
Fast Commercial Response
We provide official quotations within 24 hours.
Email: johnny@sonkit.cn
WhatsApp / Call: +86 139 1719 2435
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