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Description for Dow 3120 RTV Silicone Rubber w/ 1 Catalyst 10:1
Low tear strength, high durometer, excellent heat stability.Application Type Mold-Making, Pot, Encapsulate 1 Part or 2 Part 2 Part Material Form Liquid (Base), Paste (Catalyst) Substrate Aluminum foil, Paper, Metal, Plastic, Polyesters Industry Coils, Transformers, Electrical, Printed circuit boards, Electronic Manufacturer Dow Chemistry Silicone rubber surfaces Cure Method Base/Catalyst Cure Temperature (°C) 20 to 25 Cure Time (min) 480 Viscosity (cPs) 28,000, Pourable Color Red High Temperature Resistance (°C) 300 Low Temperature Resistance (°C) -55 Other Resistance Radiation Key Specifications Mil-Spec (United States Military Standard): MIL-S-23586
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Cure Temperature Test Methods
Cure Temperature | Cure Time Test Method |
---|---|
20 to 25°C |
Cure Time Test Methods
Cure Time | Test Method |
---|---|
480 min |
Viscosity Test Methods
Viscosity | Test Method | Temperature |
---|---|---|
28,000 cPs | ASTM D 1084B | 25°C |
Pourable |
Tensile Strength Test Methods
Tensile Strength | Test Method |
---|---|
900 psi | ASTM D 412, Die (C) |
Dielectric Constant Test Methods
Dielectric Constant | Temperature | Test Method |
---|---|---|
4.19 | 25°C | ASTM D 150, Using Dow Corning RTV Catalyst F or S at 10:1 base to catalyst ratio. Wide departures from normal 10:1 ratio may slightly alter physical properties such as hardness and elongation, 100 Hz |
3.54 | 25°C | ASTM D 150, Using Dow Corning RTV Catalyst F or S at 10:1 base to catalyst ratio. Wide departures from normal 10:1 ratio may slightly alter physical properties such as hardness and elongation, 100 KHz |
Dielectric Strength Test Methods
Dielectric Strength | Test Method |
---|---|
Good |
Dissipation Factor Test Methods
Dissipation Factor | Temperature | Test Method |
---|---|---|
0.07000 | 25°C | ASTM D 150, Using Dow Corning RTV Catalyst F or S at 10:1 base to catalyst ratio. Wide departures from normal 10:1 ratio may slightly alter physical properties such as hardness and elongation., 100 Hz |
0.01700 | 25°C | ASTM D 150, Using Dow Corning RTV Catalyst F or S at 10:1 base to catalyst ratio. Wide departures from normal 10:1 ratio may slightly alter physical properties such as hardness and elongation., 100 kHz |
Thermal Conductivity Test Methods
Thermal Conductivity | Temperature | Test Method |
---|---|---|
0.31 W/m°K | 25 to 100°C | ASTM D 2214 |
Volume Resistivity Test Methods
Volume Resistivity | Test Method |
---|---|
2.7e13 (ohms/cm) | ASTM D 257, Using Dow Corning RTV Catalyst F or S at 10:1 base to catalyst ratio. Wide departures from normal 10:1 ratio may slightly alter physical properties such as hardness and elongation. |
Shore A Hardness Test Methods
Shore A Hardness | Shore Hardness Test Method |
---|---|
60 | ASTM D 2240 |
Elongation Test Methods
Elongation | Test Method |
---|---|
1 % | ASTM D 412 |
Specific Gravity Test Methods
Specific Gravity | Temperature | Test Method |
---|---|---|
1.450 | 25°C | ASTM D 792A |

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