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	Silicone Properties
The first practical silicone rubbers were introduced in the mid 1940’s. Since then continual improvements have been made. Today a broad range of physical properties are available including:
Useful temperature range	-175 ºF to 500+ ºF
Hardness, Shore A	20 to 90
Tensile Strength, psi	up to 1,600
Elongation, %	up to 1,000
Tear Resistance, ppi	up to 300
Compression Set, %	down to 8
Specific Gravity	1.0 to 2.1
Volume Resistivity, Ohm-cm	1015 to 1017
Electric Strength, volt/mil	600 to 650
Dielectric Constant (60 cps)	3.0 to 3.5
In addition to these properties silicone rubber also offers: long service life, inertness, and good chemical, weather, flame, and radiation resistance. We at Laur Silicone are proud to have played a part in these improvements, and remain committed to yet further improvements.