Freudenberg Sealing Technologies 80 NBR B241 Nitrile Butadiene Rubber

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Freudenberg Sealing Technologies 80 NBR B241 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	Original Value	Comments

Density	1.20 g/cc @Temperature 23.0 °C	DIN EN ISO 1183-1

Mechanical Properties	Original Value	Comments
Hardness, Shore A	78 @Temperature 23.0 °C	DIN ISO 7619-1
Tensile Strength	22.0 MPa @Temperature 23.0 °C	DIN 53504, S2
Elongation at Break	300 % @Temperature 23.0 °C	DIN 53504, S2
100% Modulus	4.20 MPa @Temperature 23.0 °C	DIN 53504, S2
Tear Strength	21.0 kN/m @Temperature 23.0 °C	DIN ISO 34-1
Compression Set	22 % @Temperature 70.0 °C, Time 79200 sec	DIN ISO 815, B
	36 % @Temperature 100 °C, Time 252000 sec	DIN ISO 815, B

Thermal Properties	Original Value	Comments
Minimum Service Temperature, Air	-27.0 °C	DSC; ISO 11357-2

Descriptive Properties
Color	black
Flexural stress in low temperatures	-40	BMW GS 93010-2

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PFREU9186 / 293709

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