NuSil MED-4128 Silicone, One Part High Consistent Elastomer

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NuSil MED-4128 Silicone, One Part High Consistent Elastomer - Restricted Medical Use
Categories:	Polymer; Thermoset; Silicone
Material Notes:	Description: HCRs can be used for extrusion of tubing and profiles (rod or ribbon), in calendared sheeting for die-cutting, or in compression or transfer molded parts such as balloons, gaskets or o-rings. HCRs are clay-like in the uncured state and when cured generally exhibit very high mechanical properties and low modulus. Important Properties: HCRs with a peroxide cure system have a long history in implant applications. The cure mechanism can be vinyl specific or non vinyl specific. Non vinyl specific peroxide catalysts are more commonly used with HCRs than vinyl specific peroxide catalysts. Features of peroxide cure high consistency rubbers include the following: One or two part Indefinite work time Heat required Acid or alcohol byproducts Post cure required % shrinkage ~2 -5% Comments: Low Tension Set, Uncatalyzed Cure System: Peroxide Information provided by NuSil
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Physical Properties	Metric	English	Comments

Specific Gravity	1.11 g/cc	1.11 g/cc

Mechanical Properties	Metric	English	Comments
Hardness, Shore A	25	25	Typical
	20 - 30	20 - 30	Certified
Tensile Strength at Break	5.50 MPa	798 psi	Certified
	7.40 MPa	1070 psi	Typical
Tensile Stress at Strain	0.621 MPa @Strain 200 %	90.0 psi @Strain 200 %
Elongation at Break	700 %	700 %	Certified
	825 %	825 %	Typical
Tear Strength	7.01 kN/m	40.0 pli	Certified
	13.1 kN/m	75.0 pli	Typical

Processing Properties	Metric	English	Comments
Cure Time	5.00 min @Temperature 116 °C	0.0833 hour @Temperature 241 °F
	120 min @Temperature 200 °C	2.00 hour @Temperature 392 °F	Post

Descriptive Properties
Mix Ratio	1 Part
Plasticity	71 mils

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PNUSIL419 / 142143

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