Accession Number : AD0820940
Title : COMPATIBILITY OF MATERIALS FOR AMMONIA REGULATOR LIP SEALS,
Corporate Author : NORTH AMERICAN AVIATION INC LOS ANGELES CALIF
Personal Author(s) : Geib,E.
Report Date : 05 JUL 1961
Pagination or Media Count : 3
Abstract : On the basis of inertness to ammonia, the materials tested fall into the following sequence (most inert at top of list): (1) FEP Teflon (Polyfluorinated ethylene propylene); (2) KEL-F (Polytrifluorochloro-ethylene); (3) Tedlar (Polyvinyl Fluoride); and (4) Vac-Pak (Polyamide). Mylar is completely unsatisfactory. Complete disintegration of samples occurred in 30 days in anhydrous ammonia. Initial failure was observed after 14 days.
Descriptors : (*PLASTIC SEALS, COMPATIBILITY), HALOCARBON PLASTICS, AMMONIA, DEGRADATION, PHYSICAL PROPERTIES, AMMONIUM COMPOUNDS, FAILURE(MECHANICS), VISUAL INSPECTION, TENSILE PROPERTIES, PRESSURE REGULATORS, PRESSURIZATION
Subject Categories : Adhesives, Seals and Binders
Distribution Statement : APPROVED FOR PUBLIC RELEASE