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NuSil™ EPM-2421

1 of 565 products in this brand
NuSil™ EPM-2421 is a low volatility silicone elastomer.

Polymer Name: Silicone Elastomer

End Uses: Electrical Components

Features: Corrosion Resistant, Good Thermal Stability, Low Moisture Absorption, Low Shrinkage, Low Viscosity

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Identification & Functionality

Chemical Family
Polymer Name
Technologies

Features & Benefits

Product Highlights
  • Two-part, clear silicone system
  • Offers low modulus and low viscosity
  • 1:1 Mix Ratio (Part A: Part B)
  • RoHS compliant

Applications & Uses

Plastics & Elastomers End Uses
Applications
  • For applications requiring low volatility and high purity
  • Designed for protection of electrical components and assemblies against shock, vibration, moisture, dust, chemicals, and other environmental hazards
  • Ideal for applications in which clarity and low viscosity are important
Instructions for Use

Mixing and Vacuum Deaeration

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. 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

Substrate Considerations

EPM-2421 cures in contact with most materials common to electronic assembles. Exceptions include butyl and chlorinated rubbers, some Tin condensation cure silicones and unreacted residues of some curing agents. Units being encapsulated or potted should be clean and free of surface contaminates. Containers and dispensers being used should also be clean and dry. Cure inhibition can usually be prevented by washing all containers with solvent or volatizing the contaminant by heating.

Properties

Typical Properties
ValueUnitsTest Method / Conditions
Viscosity3,225 (3,225 )cP (Mpa*s)
Durometer Type A50.0
Tensile850 (5.86 )psi (MPa)
Elongat ion90.0%
Dielectric Strength610 (23.79 )volts/mil (kV/mm)
Lap Shear250 (1.72 )psi (MPa)
Specific Gravity1.02
Tack Free Time5.0hours
Volat ile Content0.7%
Work Time3.0hours

Packaging & Availability

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