Freudenberg Sealing Technologies 75 HNBR 181070 Hydrogenated Nitrile Rubber

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Freudenberg Sealing Technologies 75 HNBR 181070 Hydrogenated Nitrile Rubber
Categories:	Polymer; Thermoset; Rubber or Thermoset Elastomer (TSE)
Material Notes:	HNBR is resistant to hot water and exhibits good cold and high temperature behavior. In sealing technology, the significantly more expensive HNBR, which is a proven standard material for automotive engine timing belts, is primarily used in applications where higher temperatures and/or mechanical strength are required. Its strength is above all in demand for rod and piston seals, along with O-rings, radial shaft seal rings, boots and diaphragms. Information provided by Freudenberg Sealing Technologies.
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Physical Properties	Metric	English	Comments

Density	1.19 g/cc	0.0430 lb/in³	DIN EN ISO 1183-1

Mechanical Properties	Metric	English	Comments
Hardness, Shore A	75	75	DIN ISO 7619-1
Tensile Strength	23.5 MPa	3410 psi	DIN 53504, S2
Elongation at Break	375 %	375 %	DIN 53504, S2
100% Modulus	3.40 MPa	493 psi	DIN 53504, S2
Compression Set	27 % @Temperature 150 °C, Time 79200 sec	27 % @Temperature 302 °F, Time 22.0 hour	DIN ISO 815

Thermal Properties	Metric	English	Comments
Maximum Service Temperature, Air	140 °C	284 °F
Minimum Service Temperature, Air	-25.0 °C	-13.0 °F	DSC; ISO 11357-2
	-25.0 °C	-13.0 °F

Descriptive Properties
Color	black
Cross-linking	peroxidic

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PFREU9145 / 293670

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