Freudenberg Sealing Technologies 75 HNBR 231142 Hydrogenated Nitrile Rubber

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Freudenberg Sealing Technologies 75 HNBR 231142 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	1.20 g/cc @Temperature 23.0 °C	0.0434 lb/in³ @Temperature 73.4 °F	DIN EN ISO 1183-1

Mechanical Properties	Metric	English	Comments
Hardness, Shore A	81 @Temperature 23.0 °C	81 @Temperature 73.4 °F	DIN ISO 7619-1
Tensile Strength	26.0 MPa @Temperature 23.0 °C	3770 psi @Temperature 73.4 °F	DIN 53504, S2
Elongation at Break	202 % @Temperature 23.0 °C	202 % @Temperature 73.4 °F	DIN 53504, S2
100% Modulus	10.0 MPa @Temperature 23.0 °C	1450 psi @Temperature 73.4 °F	DIN 53504, S2
Compression Set	22 % @Temperature 150 °C, Time 86400 sec	22 % @Temperature 302 °F, Time 24.0 hour	DIN ISO 815, B

Thermal Properties	Metric	English	Comments
Maximum Service Temperature, Air	140 °C	284 °F
Minimum Service Temperature, Air	-35.0 °C	-31.0 °F

Descriptive Properties
Color	black
Cross-linking	peroxidic
Microhardness (IRHD)	78		DIN ISO 48 Procedure M

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PFREU9149 / 293671

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