O-ring sealing arrangements for ultra-high vacuum systems
Patent
·
OSTI ID:5825336
An all metal reusable o-ring sealing arrangement is disclosed for sealing two concentric tubes in an ultra-high vacuum system. An o-ring of a heat recoverable alloy such as nitinol is concentrically positioned between protruding sealing rings of the concentric tubes. The o-ring is installed between the tubes while in a stressed martensitic state and is made to undergo a thermally induced transformation to an austenitic state. During the transformation the o-ring expands outwardly and contracts inwardly toward a previously sized austenitic configuration, thereby sealing against the protruding sealing rings of the concentric tubes.
- Assignee:
- Department of Energy
- Patent Number(s):
- US 4281841
- OSTI ID:
- 5825336
- Country of Publication:
- United States
- Language:
- English
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