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NuSil™ MED2-4220

1 of 565 products in this brand
NuSil™ MED2-4220 is a fast cure low viscosity silicone elastomer.

Product Type: Coating, Encapsulant, Potting Compound

Application Area: Medical Applications

Chemical Family: Silicones

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Knowde Enhanced TDS

Identification & Functionality

Chemical Family
CAS No.
68909-20-6

Features & Benefits

Product Highlights
  • A two-part, translucent silicone elastomer system that cures at room temperature
  • Cures with heat via addition-cure chemistry
  • 1:1 Mix Ratio (Part A: Part B)

Applications & Uses

Application Area
Plastics & Elastomers End Uses
Applications
  • For use in potting, encapsulating, coating, and injection or transfer molding applications
  • For applications requiring very rapid cure elastomer
Instructions for Use

Mixing

Combine Part A and Part B in a 1:1 mix ratio prior to use. Airless mixing, metering or dispensing equipment is recommended for production operations. If mixing by hand, take care to minimize air entrapment.

Vacuum Deaeration

Remove air entrapped during mixing by common vacuum deaeration procedure, observing all applicable safety precautions. Slowly apply full vacuum to a suitable container of at least four times the volume of material being de-aired. Hold vacuum until bulk deaeration is complete.

Cure Inhibition

Curing may be inhibited by traces of amines, sulfur, nitrogen oxide, organotin compounds, and carbon monoxide. Because organic rubbers often contain these substances, they should not come in contact with the uncured elastomer. Catalyst residues from silicone RTV elastomers and peroxide-cured silicone elastomers may also inhibit the cure.

Properties

Typical Properties
ValueUnitsTest Method / Conditions
Durometer Type A20.0
Viscosity19,500 (19,500 )cP (Mpa*s)
Work Time3.0minutes
Tensile585 (4.03 )psi (MPa)
Elongat ion500.0%
Mix Rat io0.042361111
Specific Gravity1.07
Stress at Strain 200 %100 (0.69)psi (MPa)
Cured Properties
ValueUnitsTest Method / Conditions
Cure at 150 °C15.0minutes
Cure SystemPlatinum

Packaging & Availability

Regional Availability
  • Asia Pacific
  • Europe
  • Latin America
  • North America