Freudenberg Sealing Technologies N434 (NBR) Nitrile Butadiene Rubber

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Freudenberg Sealing Technologies N434 (NBR) Nitrile Butadiene Rubber
Categories:	Polymer; Thermoset; Rubber or Thermoset Elastomer (TSE)
Material Notes:	Nitrile rubber exhibits superior mechanical strength with high elasticity as well as good deformation behavior. Its relatively low heat resistance can be traced to the presence of reactive double bonds. It is used for oil- and fuel-resistant seals such as Simmerrings®, O-rings and frame seals. The use of NBR marked the arrival of elastomers as a sealing material particularly in general industry. Information provided by Freudenberg Sealing Technologies.
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Physical Properties	Metric	English	Comments

Specific Gravity	1.24 g/cc	1.24 g/cc	ASTM D297

Mechanical Properties	Metric	English	Comments
Hardness, Shore A	75	75	ASTM D2240
Tensile Strength	17.8 MPa	2580 psi	ASTM D1414
Elongation at Break	377 %	377 %	ASTM D1414
Compression Set	64 % @Temperature 125 °C, Time 252000 sec	64 % @Temperature 257 °F, Time 70.0 hour	ASTM D395 Method B

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PFREU9286 / 293808

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