Document rxvORoZNwod1rD8dmL22LjXZq

Engineering Material Specification Materiel Name Specification Number GASKET, ASBESTOS/NITRILE RUBBER ESF-M8G55-A 1. SCOPE The material defined by this specification is a sheet of asbestos fiber and nitrile rubber, highly compressed to produce maximum density and relatively impervious structure. 2. APPLICATION This specification was released originally for material used where resistance to high temper ature and fuel is required, and where good recovery characteristics from swelling due to temperature and fuel is desired, i.e., gasket for the carburetor power valve. 2. ,REQUIREMENTS All tests and conditioning shall be conducted in accordance with ASTM F 104, Type 1, class 1, unless otherwise specified. 3.1 COMPRESSIBILITY (ASTM F 36, 5000 psi (34.5 MPa) load) Recovery, min 3.2 TENSILE STRENGTH, min 15 - 30% 40% 2000 psi (13.8 MPa) 3.3 IMMERSION IN LIQUIDS Immersion Fluid Thickness Weight Change, Change, Test Conditions max max Tensile Strength Loss, max Compressibility ASTM Oil No. 1 ASTM Oil No. 3 ASTM Fuel "B" Motorcraft Anti-Freeze & Water (50/50) Water 5 h, 149C 70 h, 100C 70 h, 21-30C 70 h at boiling 70 h, 100C 13% 20% 16% 25% 20% - 55% 20% 30% - - 0-35% 0-40% - - 3.4 FLEXIBILITY FACTOR "F" As received . Oven Aged ^ (70 h at 100C) Oil Aged (ASTM Oil No. 1, 5 h at 149C) Must pass test 12 16 16 { Data i i i ms mi i1963 06 25 t . iMv* Para. No. | Pavisioru j Metricated, Renumbered Jc Retroed^^V^'/^'^^^fl Released F6-1073 ' BO01 *3?9 l \ Page J- of JL