metal U-Ring

> Category:Metal U-ring
> Applications:
Aerospace equipments; Semiconductor; Cryogenic; Engines; Nuclear instruments; Heat exchangers; Reactors; Hot Runners; Oil & Gas; Flow meters;  Chemical fibers; Food & medicine equipment etc.  
  • Working temperature


  • Working Pressure


  • Suitable medium

    Oil water gas etc.

  • Leak Rate

    1E-9pam³/s even lower

  • Conventional Material

    321/316L/304/inconel 718 Aluminum copper etc.


Features & Benifits

Metal U-ring is based on a metallic "U" substrate, designed to be used for static and low-cycle dynamic shaft sealsBy default, Metal U-Rings for axial Pressure are system pressure energized, they require low bolting load and have good spring back. Due to its special structure and material, Metal U-rings can be used in working conditions such as high temperature (up to 750°C), cryogenic (low to -270°C), high pressure (up to 1500kgf/cm2), high vacuum (up to 1E-9 mmHg) and other extreme working conditions of static sealing.

  • Specifications:

1: Product specifications:
    • Outer Diameter Range: 0.250''(6mm)-120''(3048mm)
    • Cross section Range: 
    • Common product shapes: round rectangular or racetrack
      (Customized product shapes also availabe)
2. Available for axial pressure
3: Functional temperature ranges from -270°C to 750°C even higher.
4: Functional pressure range from Ultra-vacuum to +300mpa.
5: A wide range of plating options reinforce a high level of sealing performance
6: Solid and elegant electroplating process.
7: Low leakage rate: 1E-10pa m³/s or even lower.
8: 3-year warranty period. 
Metallic Material Options:
    • Alloy 718    • Alloy X-750    • 316 SS     • 321 SS     • Waspaloy
Plating/Coating Options:
    • Silver     • Nickel     • Gold     • Stannum    • Copper    • PTFE


Application characteristics

 1. For low seating load installation.
 2. In the quarter-turn application, the plating is transferred to the valves to achieve wear resistance.


Sonkit Is Your Sealing Design Facilitator

Sonkit specializes in metallic seals, we are serving customers from all kinds industries, include Global Fortune 500 Companies.

You can benefit from Sonkit via:
• Experienced research and technical support team
• Stable and reliable electroplating process
• Customized heating process with high reliablity
• In-house test labs for high quality control
• Quick Response Time
• Close co-operation with renowned universities and Research Institute
• Experience cooperating with Top500 Enterprise worldwide

Ensure you get the high quality products, we provide:
• 100% strength test for weldment
• Provide weld pass inspection report as required
• Helium leak detection report
• Static Pressure test to 100Mpa
• Coating thickness detection
• Digital size inspection and special measuring tool inspection capabilities

Purchasing Inqueries, we provide Quotation in 24 hours.

Please email to: (Or make a call:  +8613917192435 (WhatsApp))


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