Accession Number : AD0288561

Title :   MATERIALS-INTEGRAL FUEL TANK AND CABIN PRESSURE SEALANTS-HIGH TEMPERATURE RESISTANCE (325 F)-EVALUATION OF

Corporate Author : GENERAL DYNAMICS/FORT WORTH TEX

Personal Author(s) : PRICE,H.M.

Report Date : 02 NOV 1962

Pagination or Media Count : 1

Abstract : Integral fuel tank and cabin pressure sealants currently used on the B-58 airplane were developed with a maximum operating temperature of 275 F as a goal. Tests were made to screen and evaluate presently available high temperature sealants at 325 F, and to determine their sealing capabilities. Results showed that 325 F was very detrimental to the physical properties of the sealants. The most outstanding effects observed in all high temperature tests were shrinkage, embrittlement, and blowing. In the case of one material depolymerization was noted. Fluid exposures at 170 F did not appear to have such a radical effect upon the sealants as did the 325 F tests. However, all materials displayed a tendency to swell and become spongy during fuel exposure. All specimens which were subjected to 325 F following fuel exposure were destroyed by the heat. (Author)

Descriptors :   *FUEL TANKS, *PRESSURIZED CABINS, *SEALING COMPOUNDS, *SYNTHETIC RUBBER, ADHESION, CLEANING, CORROSION, DEFORMATION, ELASTIC PROPERTIES, EXTRUSION, HEAT RESISTANT PLASTICS, HIGH TEMPERATURE, MECHANICAL PROPERTIES, METALS, PHYSICAL PROPERTIES, POLYMERIZATION, SHEETS, STABILITY, TENSILE PROPERTIES, VISCOSITY

Distribution Statement : APPROVED FOR PUBLIC RELEASE