Epoxies, Etc 20-1625 Optically Clear Silicone Potting and Encapsulating Compound

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Epoxies, Etc 20-1625 Optically Clear Silicone Potting and Encapsulating Compound
Categories:	Polymer; Thermoset; Silicone
Material Notes:	Description: 20-1625 is a low viscosity and easy to use 1:1 ratio silicone system. It is designed for applications that require clarity and protection from shock and vibration. 20-1625 provides good heat resistance and is flame retardant. 20-1625 is formulated without solvents or other toxic materials. It is therefore not regulated or considered hazardous for transportation. Features: Easy 1:1 mix ratio Soft Excellent electrical properties Solvent free Optically clear Benefits: Simple to use Low stress on components and vibration resistant Extends life of electronic assemblies No by-products released during cure and safe to handle Easy component identification Information provided by Epoxies, Etc
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Physical Properties	Metric	English	Comments

Specific Gravity	0.980 g/cc	0.980 g/cc	Resin (Part A)
	0.980 g/cc	0.980 g/cc	Activator (Part B)
Viscosity	4000 cP	4000 cP	Activator (Part B)
	4500 cP	4500 cP	Resin (Part A)
Storage Temperature	18.0 - 27.0 °C	64.4 - 80.6 °F

Mechanical Properties	Metric	English	Comments
Hardness, Shore A	25	25

Electrical Properties	Metric	English	Comments
Volume Resistivity	1.00e+15 ohm-cm	1.00e+15 ohm-cm
Dielectric Constant	2.7 @Frequency 60 Hz	2.7 @Frequency 60 Hz
Dielectric Strength	19.7 kV/mm	500 kV/in

Thermal Properties	Metric	English	Comments
CTE, linear	270 µm/m-°C	150 µin/in-°F
Thermal Conductivity	0.159 W/m-K	1.10 BTU-in/hr-ft²-°F
Maximum Service Temperature, Air	20.0 °C	68.0 °F
Minimum Service Temperature, Air	-55.0 °C	-67.0 °F

Processing Properties	Metric	English	Comments
Cure Time	60.0 min @Temperature 60.0 °C	1.00 hour @Temperature 140 °F
	180 - 240 min @Temperature 25.0 °C	3.00 - 4.00 hour @Temperature 77.0 °F
Shelf Life	6.00 Month	6.00 Month

Descriptive Properties
Color	Clear		Resin (Part A)
	Clear		Activator (Part B)
Working Time	20 min

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

PFEPOX001 / 316678

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