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Contract Laboratory needed for propellant resistance testing of finished wire to MIL-DTL-82381 4.6.4.21 Propellant resistance testing of specimen of finished wire, 24 inches (610 mm) in length, shall be immersed to within 1-1/2 inches (38.1 mm) of each end in hydrazine-uns-dimethylhydrazine propellant (50% N2H4 - 50% UDMH) of MIL-PRF-27402 for 30 minutes at a temperature of 20 to 25 °C (68 to 77 °F).
During immersion, the radius of bend of the wire shall be not less than fourteen times the maximum specified diameter of the wire under test. Upon removal from the liquid, the specimen shall be allowed to remain for 1 hour in free air at room temperature. The insulation shall then be removed for a distance of one inch from each end of the specimen and the specimen shall be subjected to the dielectric test of 4.6.4.17.3.
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