Dow 255 Primerless Elastomer Datasheet Dow 255 Primerless Elastomer

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  • Description for Dow 255 Primerless Elastomer

    Two part; 10:1 mix; non-corrosive; good dielectric properties; flexible elastomer; non-heat curable; tin catalyst cannot be inhibited; reversion possible with heat and pressure in sealed environments.

    Note: This material has been discontinued. Please view the Manufacturer's Recommended Replacement tab or call us at (262) 293-7970 for additional help.

    *See Terms of Use Below

    Chemical Resistance Good
    Application Type Pot, Encapsulate
    1 Part or 2 Part 2 Part
    Material Form Liquid, Silicone elastomer
    Industry Electronics, Sensors, Transformers, Connectors, Amplifiers, High voltage resistor packs, Relays
    Manufacturer Dow
    Chemistry Silicone, Silicone elastomer
    Cure Method Base/Curing agent
    Cure Temperature (°C) 20 to 25, 20 to 25
    Cure Time (min) Rapid, ~14400 (Seconds), 1,440
    Viscosity (cPs) 5,500, Flowable
    Color Black, Gray
    Ozone Resistance Ozone resistance
    High Temperature Resistance (°C) 200
    Low Temperature Resistance (°C) -45, -55
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Cure Temperature Test Methods
Cure Temperature Cure Time Test Method
20 to 25°C
20 to 25°C These data were collected on 50-100 gram samples of a lot believed to be typical and should be used as initial estimates of cure times. Times will vary slightly from batch to batch and can be longer or shorter due to thermal mass of your parts and your heating ramp rate. Pretesting is recommended to confirm adequate cure for your application.
Cure Time Test Methods
Cure Time Test Method
Rapid
~14400 (Seconds) These data were collected on 50-100 gram samples of a lot believed to be typical and should be used as initial estimates of cure times. Times will vary slightly from batch to batch and can be longer or shorter due to thermal mass of your parts and your heating ramp rate. Pretesting is recommended to confirm adequate cure for your application.
1,440 min For primerless adhesion products, cure time is based on time to reach durometer. Full adhesion may take more time at cure temeprature.
Work / Pot Time Test Methods
Work / Pot Time Temperature
<5.00 min Room temperature
Shear Strength Test Methods
Shear Strength Type
44 psi Lap shear strength
Dielectric Constant Test Methods
Dielectric Constant Test Method
2.95 (100 Hz)
2.83 (100 kHz)
Dissipation Factor Test Methods
Dissipation Factor Test Method
0.01700 (100 Hz)
<0.00590 (100 kHz)