Precision Polymer Engineering N70U Nitrile Rubber

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Precision Polymer Engineering N70U Nitrile Rubber
Categories:	Polymer; Thermoset; Rubber or Thermoset Elastomer (TSE)
Material Notes:	Nitrile Butadiene Rubber (NBR) 65-75 °IRHD. Copolymer of acrylonitrile and butadiene. To meet Aerospace Material Specification DTD458A Grade A1 (specification inactive for new design). Applications: Synthetic rubber for use with mineral base aviation hydraulic fluid.
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Mechanical Properties	Metric	English	Comments

Hardness, Shore A	70	70	°IRHD; ASTM D1415
	60 - 80	60 - 80	°IRHD, ±10 change after 70 hours @ 100°C; ASTM D1415
Tensile Strength, Yield	6.46 MPa	937 psi	-15% change after 70 hours @ 100°C; ASTM D412
	7.60 MPa	1100 psi	ASTM D412
Elongation at Break	210 %	210 %	-30% change after 70 hours @ 100°C; ASTM D412
	300 %	300 %	ASTM D412
Compression Set	7.0 % @Temperature 100 °C, Time 86400 sec	7.0 % @Temperature 212 °F, Time 24.0 hour	ASTM D395

Thermal Properties	Metric	English	Comments
Maximum Service Temperature, Air	120 °C	248 °F
Minimum Service Temperature, Air	-40.0 °C	-40.0 °F
	-40.0 °C	-40.0 °F	Non-brittle after 3 minutes
Flash Point	>= 300 °C	>= 572 °F

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PPRECI193 / 57917

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