Metflex EM67 Natural Rubber

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Metflex EM67 Natural Rubber
Categories:	Polymer; Thermoset; Rubber or Thermoset Elastomer (TSE)
Material Notes:	Natural rubber compound developed specifically for subsea and offshore applications. Material properties formulated with very high tensile properties, resilience and dynamic properties with very good resistance to ageing when exposed to heat build-up in service. Tear and abrasion resistance is also better than most synthetic elastomers. Information provided by Metflex
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Physical Properties	Metric	English	Comments

Specific Gravity	1.21 g/cc	1.21 g/cc	ISO 2781
Water Absorption	<= 1.0 % @Temperature 23.0 °C	<= 1.0 % @Temperature 73.4 °F	2 weeks; ISO 1817

Mechanical Properties	Metric	English	Comments
Hardness, Shore A	67	67	IRHD; ISO 48
Tensile Strength	21.0 MPa	3050 psi	ISO 37: Type 2
Elongation at Break	420 %	420 %	ISO 37: Type 2
Compressive Modulus	0.00560 GPa @Strain 30 %	0.812 ksi @Strain 30 %	ISO 7743
Rebound	34 %	34 %	Rebound Resilience; ASTM D2632
Shear Modulus	0.00115 GPa @Strain 40 %	0.167 ksi @Strain 40 %	ISO 1827
	0.00125 GPa @Strain 25 %	0.181 ksi @Strain 25 %	ISO 1827
Compression Set	11 % @Temperature 22.0 °C, Time 259000 sec	11 % @Temperature 71.6 °F, Time 72.0 hour	25% strain; ISO 815

Thermal Properties	Metric	English	Comments
Maximum Service Temperature, Air	70.0 °C	158 °F
Minimum Service Temperature, Air	-50.0 °C	-58.0 °F

Descriptive Properties
Stress Relaxation Rate	2.8%		25% @ 22°C

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

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