Description
Insulcast RTVS 27 HTC is a two-component RTV silicone potting and encapsulation compound for heat-generating electronics that need thermal management along with environmental protection. Its 1.0 W/mK thermal conductivity carries heat away from hot-running components while a UL 94 V0 rating and 500 V/mm dielectric strength keep the finished assembly flame retardant and electrically isolated.
Insulcast RTVS 27 HTC Benefits
- Thermally conductive at 1.0 W/mK to move heat away from hot components and extend service life
- UL 94 V0 flame retardant for fire-safety requirements
- 500 V/mm dielectric strength for reliable electrical isolation
- Wide service range from -55 C to 232 C for demanding environments
- Seals out moisture, dust, and contaminants and cushions parts against shock and vibration
- Simple 1:1 mix ratio by weight with a one-hour working time at 25 C
Common Applications
- Potting power supplies, transformers, and coils
- Sealing sensors, connectors, and control modules
- Protecting LED and lighting electronics
- Encapsulating medical device electronics
- EV and e-mobility power electronics
Typical Properties
- Mix ratio (by weight): 1:1
- Viscosity (Part A): 8,000 cP
- Pot life (25 C): 1 hr
- Cure: 24 hr @25 C / 2 hr @60 C / 0.25 hr @120 C
- Hardness: Shore A 60
- Service temperature: -55 to 232 C
- Thermal conductivity: 1.0 W/mK
- Dielectric strength: 500 V/mm
- Flammability: UL 94 V0
Surface Prep and Use
Combine Part A and Part B at 1:1 by weight and mix thoroughly to a uniform color. Pour or pump the mixed compound around the assembly, working within the one-hour pot life at 25 C. Degas under vacuum for a void-free pot in critical assemblies. Cure 24 hours at 25 C, 2 hours at 60 C, or 0.25 hour at 120 C.
Ordering and Product Support
Insulcast RTVS 27 HTC is part of our encapsulants and potting compounds line, manufactured by ITW Performance Polymers.
Call (800) 220-1966 or email [email protected] for pricing, lead time, and technical support.
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