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Genera] Electric Company, Schenectady, N. Y.A discussion of problems associated with sealing lowtemperature fluids such as liquid oxygen at moderately high pressures is presented. A static seal of the self-sealing type employing a rubber gasket and using a drop in temperature to produce gasket stresses is described which effectively overcomes difficulties previously encountered. An approximate design equation is developed and some low-temperature properties of rubber are discussed.

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