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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.
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) |