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NuSil™ R-2615 is a optically clear potting and encapsulating silicone elastomer.

Product Type: Encapsulant, Potting Compound

Application Area: Electrical Components

Chemical Family: Silicones

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Knowde Enhanced TDS

Identification & Functionality

Chemical Family

Features & Benefits

Labeling Claims
Product Highlights
  • Two-part, optically clear, solvent free, low viscosity silicone
  • Cures at room temperature or rapidly with heat
  • Offers good physical and electrical stability across a broad range of temperatures
  • 10:1 Mix Ratio (Part A:Part B)

Applications & Uses

Application Area
Applications
  • To provide protection of electronic components and assemblies against shock, vibration, moisture, ozone, dust, chemicals and other environmental hazards by potting or encapsulating
  • For photonics applications
  • For applications requiring an operating temperature range of -65 to 240°C (-85 to 465°F)
Instructions for Use

Mixing

Mix in a 10:1 ratio Part A to Part B, taking care to minimize air entrapment during mixing.

Vacuum Deaeration

Remove air entrapped during mixing by common vacuum deaeration procedure, observing all applicable safety precautions. Slowly apply vacuum, up to 28 inches Hg, to a container rated for use and of volume at least four times that of material being deaerated. Hold vacuum until presence of air is no longer evident.

Substrate Consideration

Cures in contact with most materials common to electronic assemblies. Exceptions include butyl and chlorinated rubbers, some RTV silicones and unreacted residues of some curing agents. Units being encapsulated or potted should be clean and free of surface contaminants. Containers and dispensers being used should also be clean and dry. Cure inhibition can usually be prevented by washing all containers with cleaning solvent or volatilizing the contaminants by heating.

Note: Some bonding applications may require the use of a primer. NuSil Technology CF1-135 silicone primer is recommended.

Adjustable Cure Schedule

Product cures at a wide range of cure times and temperatures to accommodate different production needs.

Some cure schedules* include:

65°C (149°F) /40 minutes

100°C (212°F) /2 minutes

* Cure time defined as the time required for a knife coat layer ~0.02” to be removed from a release liner

Properties

Typical Properties
ValueUnitsTest Method / Conditions
Viscosity5,300 (5,300 )cP (Mpa*s)
Durometer Type A50.0
Tensile1,300 (8.97 )psi (MPa)
Elongat ion95.0%
Dielectric Strength500 (19.5 )volts/mil (kV/mm)
Mix Rat io0.417361111
Refractive Index1.41
Specific Gravity1.03
Tear20 (3.53 )ppi (kN/m)
Volume Resistivity1.10E+15ohmcm
Work Time4.0hours
Cured Properties
ValueUnitsTest Method / Conditions
Cure SystemPlatinum
Cure at 150 °C15.0minutes

Packaging & Availability

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