NuSil MED-4770 Ultra High Performance High Consistency Elastomers

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NuSil MED-4770 Ultra High Performance High Consistency Elastomers - Unrestricted 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 of Adhesives: 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	Original Value	Comments

Specific Gravity	1.19 g/cc

Mechanical Properties	Original Value	Comments
Hardness, Shore A	70	Typical
	65 - 75	Certified
Tensile Strength at Break	6.90 MPa	Certified
	9.00 MPa	Typical
Tensile Stress at Strain	600 psi @Strain 100 %
Elongation at Break	500 %	Certified
	700 %	Typical
Tear Strength	250 pli	Certified
	285 pli	Typical

Processing Properties	Original Value	Comments
Cure Time	4.00 hour @Temperature 177 °C	Post
	10.0 min @Temperature 138 °C
Working Life	2.00 hour @Temperature 25.0 °C

Descriptive Properties
Plasticity	110 mils

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PNUSIL316 / 142040

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