Songhan Plastic Technology Co.,Ltd.

NuSil MED-4980 Liquid Silicone Rubber - Restricted Medical Use

Category Polymer , Thermoset , Silicone , Silicone Rubber
Manufacturer NuSil
Trade Name
Port Shanghai port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
Download PDF NuSil MED-4980 Liquid Silicone Rubber - Restricted Medical Use.pdf
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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. 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 manufacturingPlatinum cure system—no post cure requiredTypical work time in excess of 72 hours Cure rapidly at elevated temperaturesEasily pigmented using NuSil color masterbatchesComments: Injection Molding ElastomerCure System: PlatinumInformation provided by NuSil
Physical Properties Metric English Comments
Specific Gravity 1.16 g/cc
1.16 g/cc
Mechanical Properties Metric English Comments
Hardness, Shore A 80
78 - 88
78 - 88
Tensile Strength at Break 3.50 MPa
508 psi
6.20 MPa
899 psi
Tensile Stress 4.48 MPa

@Strain 100 %
650 psi

@Strain 100 %
Elongation at Break 50 %
50 %
250 %
250 %
Tear Strength 7.01 kN/m
40.0 pli
15.8 kN/m
90.0 pli
Processing Properties Metric English Comments
Extrusion Rate 50.0 g/min
50.0 g/min
Cure Time <= 5.00 min

@Temperature 165 °C
<= 0.0833 hour

@Temperature 329 °F
1440 min

@Temperature 25.0 °C
24.0 hour

@Temperature 77.0 °F
Work Time
Descriptive Properties Value Comments
Mix Ratio 1:1
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