NuSil MED-4850 Liquid Silicone Rubber - Unrestricted Medical Use

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NuSil MED-4850 Liquid Silicone Rubber - Unrestricted Medical Use
Categories:	Polymer; Thermoset; Silicone; Silicone Rubber; Liquid Silicone Rubber (LSR)
Material Notes:	Description: Liquid silicone rubbers, or LSRs, are elastomer systems reinforced with silica. They contain functional polymers of lower average molecular weight and viscosity when compared to high consistency rubbers (HCRs). They are typically supplied as two-component systems and formulated in a 1:1 mix ratio. Because their consistency is akin to petroleum jelly, they are often pumped with injection molding equipment to form molded components such as o-rings, gaskets, valves, seals, and other precision molded parts. Important Properties of Adhesives: LSRs are designed for liquid injection molding (LIM) processes which may utilize single or multi-cavity molds, or for overmolding processes. Originally designed for automated systems, they are developed with high volume applications in mind and benefit from their high strength. Features of liquid silicone rubbers include the following: Ideal for high throughput manufacturing Platinum cure system—no post cure required Typical work time in excess of 72 hours Cure rapidly at elevated temperatures Easily pigmented using NuSil color masterbatches Comments: Injection Molding Elastomer Cure System: Platinum Information provided by NuSil
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Physical Properties	Original Value	Comments

Specific Gravity	1.15 g/cc

Mechanical Properties	Original Value	Comments
Hardness, Shore A	50	Typical
	45 - 55	Certified
Tensile Strength at Break	6.90 MPa	Certified
	9.00 MPa	Typical
Tensile Stress at Strain	400 psi @Strain 200 %
Elongation at Break	400 %	Certified
	675 %	Typical
Tear Strength	200 pli	Certified
	250 pli	Typical

Processing Properties	Original Value	Comments
Extrusion Rate	50.0 g/min
Cure Time	5.00 min @Temperature 150 °C
Working Life	24.0 hour @Temperature 25.0 °C

Descriptive Properties
Mix Ratio	1:1

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PNUSIL292 / 142016

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