Freudenberg Sealing Technologies 70 NBR B276 Nitrile Butadiene Rubber

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Freudenberg Sealing Technologies 70 NBR B276 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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Mechanical Properties	Original Value	Comments

Hardness, Shore A	70 @Temperature 23.0 °C	DIN ISO 7619-1
Tensile Strength	16.0 MPa @Temperature 23.0 °C	DIN 53504, S2
Elongation at Break	340 % @Temperature 23.0 °C	DIN 53504, S2
100% Modulus	4.80 MPa @Temperature 23.0 °C	DIN 53504, S2
Tear Strength	19.4 kN/m @Temperature 23.0 °C	DIN 53507, A
Compression Set	5.8 % @Temperature 70.0 °C, Time 79200 sec	DIN ISO 815, B
	18 % @Temperature 100 °C, Time 252000 sec	DIN ISO 815, B

Thermal Properties	Original Value	Comments
Maximum Service Temperature, Air	100 °C
Minimum Service Temperature, Air	-30.0 °C

Descriptive Properties
Color	black

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PFREU9107 / 293643

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