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A Unique Metal-to-Metal Seal for Separable Joints
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English
Abstract
Environmental conditions in aerospace systems demand the use of metallic seals and the complete absence of leakage. A unique metal-to-metal seal called the Bobbin seal utilizing the elastic and plastic response characteristics of the seal structure is described. Experimental evaluations with 250 specimens, with 99% sealing helium at leakage rates less than 7 × 10−7 atm cc/sec, indicate that the Bobbin seal can overcome almost any problem of leaking joints in missile, aerospace, or aircraft systems. Results obtained with various materials, in a broad environmental spectrum, with tube sizes up to 16 in. are described.
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Citation
Goobich, B., "A Unique Metal-to-Metal Seal for Separable Joints," SAE Technical Paper 670566, 1967, https://doi.org/10.4271/670566.Also In
References
- Contract No. AF 04(611)-8176 April 1962 December 1963 Contract No. AF 04(611)-9578 December 1963 November 1965 Contract No. AF 04(611)-11204 January 1966
- Weiner R. S. "Basic Criteria and Definitions for Zero Fluid Leakage." Technical Report No. 32-926 Dec. 15 1966 Jet Propulsion Laboratory
- Baum J. V. "The Design of Separable Tube Connectors for Transient Thernal Gradients." SAE Transactions 76 1968 670587
- MS 27850 - MS 27868, and MIL-F-27417, Fittings, Rocket Engine, Fluid Connection