Accession Number : AD0437594

Title :   MATERIALS: FILLET AND FAYING SURFACE TYPE SEALANTS FOR F-111 - SCREENING TEST OF,

Corporate Author : GENERAL DYNAMICS/FORT WORTH TEX

Personal Author(s) : Wood,Gale E.

Report Date : 15 APR 1964

Pagination or Media Count : 11

Abstract : Q94-501 A/B is a two-part silicone LS-RTV. It is a reformulation of Q94-500 which had too short a work life for use in production. The work life of Q95-501 was improved somewhat when compared to Q94-500, but it is still too short for production use. Immersion in a 2-layer liquid consisting of salt water and JRF caused Q94-501 to soften and exhibit a low cohesive strength, particularly in the salt water layer. Reversion occurs when the sealant is subjected to 375 F and 400 F heat ageing. Q94-002 is a single-component version of Q94-501 and was tested as a filleting sealant. When immersed in a 2 layer liquid consisting of salt water and JRF, it softened in the salt water layer, the JRF layer and in the fuel vapor above the JRF. Based on tests described herein, neither Q94-501 nor Q94-002 will withstand the simulated F-111 environmental conditions to which they were subjected. (Author)

Descriptors :   (*SEALING COMPOUNDS, FUEL TANKS), (*PLASTIC SEALS, FUEL TANKS), (*FUEL TANKS, SEALING COMPOUNDS), JET FIGHTERS, JET ENGINE FUELS, SEA WATER, ADHESION, MECHANICAL PROPERTIES, TEST METHODS, ENVIRONMENTAL TESTS, SILICONE PLASTICS

Distribution Statement : APPROVED FOR PUBLIC RELEASE