NuSil MED-4070 Silicone Ultra High Performance High Consistency Elastomer

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NuSil MED-4070 Silicone Ultra High Performance High Consistency Elastomer - Restricted Medical Use
Categories:	Polymer; Thermoset; Silicone; Silicone Rubber
Material Notes:	Description: High consistency rubber, or HCR, consists of high molecular weight polymer combined with silica to produce a material that can be molded, extruded, or calendared into a useful end product. An HCR has the consistency of clay and is primarily formulated in a one or two part system (peroxide and platinum catalysts respectively). Important Properties: Most platinum cure high consistency rubbers are two component systems with an easy-to-work-with 1:1 mix ratio. Features of platinum cure high consistency rubbers include the following: Two part (typically) Heat accelerated No byproducts Post cure optional Low percent shrinkage Comments: Abrasion/Fatigue Resistant Cure System: Platinum Information provided by NuSil
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Physical Properties	Metric	English	Comments

Specific Gravity	1.19 g/cc	1.19 g/cc

Mechanical Properties	Metric	English	Comments
Hardness, Shore A	70	70	Typical
	65 - 75	65 - 75	Certified
Tensile Strength at Break	6.90 MPa	1000 psi	Certified
	9.00 MPa	1310 psi	Typical
Tensile Stress at Strain	4.14 MPa @Strain 100 %	600 psi @Strain 100 %
Elongation at Break	500 %	500 %	Certified
	700 %	700 %	Typical
Tear Strength	7.71 kN/m	44.0 pli	Certified
	8.82 kN/m	50.3 pli	Typical

Processing Properties	Metric	English	Comments
Cure Time	10.0 min @Temperature 138 °C	0.167 hour @Temperature 280 °F
	240 min @Temperature 177 °C	4.00 hour @Temperature 351 °F
Working Life	120 min @Temperature 25.0 °C	120 min @Temperature 77.0 °F

Descriptive Properties
Mix Ratio	1:1
Plasticity	110 mils

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PNUSIL412 / 142136

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