| |
UL94 V-O |
SPECIALTY |
| RTV627 |
RTV6428 |
FRV138 |
| Data Sheets |
Technical Data Sheet |
Technical Data Sheet |
Technical Data Sheet |
| Features |
Low viscosity sealant which offers deep section cure capabilities. UL94 V-0 recognition; Reversion resistant; Hydrolytically stable |
Fast curing, low viscosity sealant. UL94 V-0 recognition |
Flowable, two-component, fluorosilicone encapsulant that can offer a low temperature cure and excellent chemical resistance. |
Typical Applications
(Include but not limited to) |
Production line potting compounds; Encapsulation of high voltage transformers, voltage regulators, power converters; Complete power supplies, Flyback transformers. |
Encapsulation; Potting; High voltage transformers; Voltage regulators; Power converters. |
Applications requiring resistance to the swelling effects of fuels, oils, solvents and other chemicals. |
| Key Substrate Adhesion |
May require a primer for adhesion. |
May require a primer for adhesion. |
Primerless adhesion to many metals, plastics and glass. |
Mix Ratio
(base to curing agent by weight) |
1 : 1 |
1 : 1 |
1 : 1 |
Color
(Final Product) |
Dark Gray |
Dark Gray |
Translucent |
| Viscosity (cps) |
1,300 |
1,400 |
FRV138A: 11,500
FRV138B: 8,000 |
| Useful Temperature Range |
-60 to 205°C
(-75 to 400°F) |
-60 to 205°C
(-75 to 400°F) |
-60 to 205°C
(-75 to 400°F) |
| Specific Gravity |
1.37 |
1.37 |
1.30 |
| Hardness, Shore A Durometer |
62 |
62 |
– |
| Hardness, Shore 00 Durometer |
– |
– |
55 |
| Tensile Strength (psi) |
475 |
475 |
44 |
| Elongation (%) |
60 |
60 |
73 |
Thermal Conductivity
(W/mK) |
0.31 |
0.31 |
– |
Coefficient of Thermal Expansion
(Linear CTE, cm/cm °C) (in/in°F)) |
21 x 10-5
(11.4 x 10-5) |
21 x 10-5
(11.4 x 10-5) |
630 ppm/°C |
Dielectric Strength
(75 mils, V/mil) |
510 |
530 |
– |
Dielectric Constant
(1 kHz) |
2.97 |
3.00 |
7.2 |
Dissipation Factor
(1 kHZ) |
0.0060 |
0.0061 |
– |
Volume Resistivity
(ohm-cm) |
5.7 x 1014 |
5.7 x 1014 |
1.6 x 1010 |
| Processing: Work (Pot) Life @ 25°C (77°F) |
2 hours |
4 minutes |
> 8 hours |
| Cure Time @ 25°C |
2 days |
30 minutes |
– |
| 65°C |
4 hours |
15 minutes |
– |
| 90°C |
– |
– |
1 hour |
| 100°C |
1 hour |
10 minutes |
– |
| 125°C |
45 minutes |
5 minutes |
– |
| 150°C |
15 minutes |
2 minutes |
– |
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