NASA NTRS · 19780000419
Insulator for cryogenic joints
Abstract
Semirigid polyurethane foam is firm enough not to collapse yet soft enough not to crack in extreme cold. Silicone cover retards flames and glass-fabric reinforcement protects foam against accidental damage from tools during installation and maintenance.
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Hawkinson, E. L.. 1979-01-01. Insulator for cryogenic joints. https://ntrs.nasa.gov/citations/19780000419
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