Dow Sylgard 160 Silicone Elastomer

Dow Sylgard 160 Silicone Elastomer Datasheet
  • Description for Dow Sylgard 160 Silicone Elastomer

    Two part; 1:1 mix; RT/HA cure; minimal shrinkage; no exotherm during cure; no solvents or cure byproducts; repairable; good dielectric properties; deep section cure; flexible elastomer.

    *See Terms of Use Below

    Brand Sylgard
    Application Type Potting, Encapsulant
    1 Part or 2 Part 2 Part
    Material Form Liquid, Silicone elastomer
    Industry Amplifiers, Connectors, Relays, High voltage resistor packs, Sensors, Transformers, General purpose, PCB system assembly applications, E-Mobility Solutions, Smart Meters, Insulation, Smart Home Devices, Headlamp assemblies, Electronics, Electrical system assembly applications
    Manufacturer Dow
    Chemistry Silicone elastomer, Solvent-free, Polydimethylsiloxane
    Cure Method Part A/Part B, Heat, Room temperature cure
    Cure Temperature (°C) 25, 100
    Cure Time (min) 1,440, 4.00
    Viscosity (cPs) 4,865, Good flowability
    Color Dark Grey to Black, Dark Grey to Black
    Ozone Resistance Ozone resistance
    Chemical Resistance Good
    High Temperature Resistance (°C) 200
    Low Temperature Resistance (°C) -45, -55
    Key Specifications UL (Underwriters Laboratory), ULC (Underwriters Laboratories of Canada), NFPA (National Fire Protection Association): UL 94: UL 94 V-0 Recognized
  • Technical Data for Dow Sylgard 160 Silicone Elastomer

    • Application Type
    • 1 Part or 2 Part
      • 1 Part or 2 Part - 2 Part
      • Part A Name - Part A
      • Part B Name - Part B
    • Material Form
      • Elastomer - Silicone elastomer
      • Liquid
    • Industry
      • E-Mobility Solutions
      • Headlamp - Headlamp assemblies
      • Electronics - Relays, Electrical system assembly applications
      • Amplifiers
      • Connectors
      • Voltage Resistors - High voltage resistor packs
      • Sensors
      • Transformers
      • Printed Circuit Board (PCB) - PCB system assembly applications
      • Smart Meters
      • Smart Home Devices
      • Power Supplies
      • Industrial - Industrial controls
      • General Purpose
      • Insulation
    • Chemistry
    • Application Method
      • Dispenser - Automated metered mixing and dispensing
      • Other - Manual mixing
    • Cure Method
      • Room Temperature / Air Dry - Room temperature cure
      • Heat
      • 2-Part Cure - Part A/Part B
    • Color
      • Black - Dark Grey to Black
      • Gray - Dark Grey to Black
    • Key Specifications
      • UL (Underwriters Laboratory), ULC (Underwriters Laboratories of Canada), NFPA (National Fire Protection Association): UL 94: V0 - UL 94 V-0 Recognized
    • Brand
      • Sylgard
    Cure Specs
    Cure Temperature (°C) 25, 100 Test Method
    Cure Time (min) 1,440, 4.00 Test Method
    Viscosity (cPs) 4,865, Good flowability
    Linear Shrinkage (%) Minimal shrinkage
    Work / Pot Time (min) 20 Test Method
    Mix Ratio 1:1 (by volume), 1:1 (by volume), 1:1 (by weight), 1:1 (by weight)
    Material Resistance
    Ozone Resistance Ozone resistance
    Flame Resistance Good flame resistance
    Chemical Resistance Good
    UV Resistance UV resistance
    Environmental Resistance Environmental resistance
    High Temperature Resistance (°C) 200
    Low Temperature Resistance (°C) -45, -55
    Moisture/Humidity Resistance Moisture/humidity resistance
    Dissipation Factor Test Method
    Dielectric Strength (V/mil) Good, Durable, 475
    Dielectric Constant 3.51, 3.45 Test Method
    Thermal Conductivity (W/m°K) Moderate, 0.62
    Volume Resistivity (O) 5.6e14 (ohms/cm)
    Shore A Hardness 56 Test Method
    Flexibility Flexible
    Other Properties
    Coefficient of Thermal Expansion (CTE) 200 (micron/m °C or ppm ) Test Method
    Flash Point (°F) 213.8
    Business Information
    Shelf Life Details Shelf life is indicated by the “Use Before” date found on the product label. Refer to the product label for storage temperature requirements.
  • Best Practices for Dow Sylgard 160 Silicone Elastomer

    *See Terms of Use Below

    1. Surface Preparation

      In applications requiring adhesion, priming will be required for many of the silicone encapsulants. For best results, the primer should be applied in a very thin, uniform coating and then wiped off after application. After application, it should be thoroughly cured prior to application of the silicone encapsulant. Additional instructions for primer usage can be found in the information sheets specific to the individual primers.

    2. Mixing

      These products are supplied in a 1 to 1 mix ratio, which is very robust in manufacturing environments and allows for some process and dispense equipment variation. In most cases deairing is not required.

    3. Deairing/Degassing

      Thoroughly mixed Dow silicone encapsulants may be poured/dispensed directly into the container in which it is to be cured. Care should be taken to minimize air entrapment. When practical, pouring/dispensing should be done under vacuum, particularly if the component being potted or encapsulated has many small voids. If this technique cannot be used, the unit should be evacuated after the silicone encapsulant has been poured/ dispensed.

    4. Curing

      Dow silicone encapsulants may be either room temperature (25°C/77°F) or heat cured. Room temperature cure encapsulants may also be heat accelerated for faster cure.

      Cure reaction begins with the mixing process. Initially, cure is evidenced by a gradual increase in viscosity, followed by gelation and conversion to a solid elastomer.

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    *See Terms of Use Below

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Cure Temperature Test Methods
Cure Temperature Cure Time Test Method
100°C Heat Cure
Cure Time Test Methods
Cure Time Test Method
1,440 min
4.00 min Heat Cure
Work / Pot Time Test Methods
Work / Pot Time Test Method Temperature
20 min Pot Life 25°C
Dielectric Constant Test Methods
Dielectric Constant Test Method
3.51 100 Hz
3.45 100 kHz
Dissipation Factor Test Methods
Dissipation Factor Test Method
Shore A Hardness Test Methods
Shore A Hardness Shore Hardness Test Method
56 Durometer
Coefficient of Thermal Expansion (CTE) Test Methods
Coefficient of Thermal Expansion (CTE) CTE Test Method
200 (micron/m °C or ppm ) Linear CTE, By DMA