Description
Insulcast RTVS 42 Curtis II is a two-part RTV silicone potting compound for protecting electronic assemblies from heat, moisture, and vibration. Pour or pump it around the assembly and it cures to a tough, thermally conductive mass that keeps the finished part working in the field.
Insulcast RTVS 42 Curtis II Benefits
- Seals out moisture, dust, and contaminants
- Cushions components against shock and vibration
- Thermally conductive at 0.58 W/mK to carry heat away from hot-running parts
- Flame retardant to UL 94 V0 for fire-safety requirements
- Strong dielectric protection at 500 V/mm for reliable electrical isolation
- Wide service range from -55 to 125 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): 100:4.8
- Viscosity (Part A): 18,000 cP
- Pot life at 25C: 20 min
- Cure: 24 hr at 25C, or 8 hr plus 2 hr at 65C
- Hardness: 75 Shore A (10 to 15 Shore D)
- Service temperature: -55 to 125 C
- Thermal conductivity: 0.58 W/mK
- Dielectric strength: 500 V/mm
- Flammability: UL 94 V0
Surface Prep and Use
Mix Part A and Part B at 100:4.8 by weight. Pour or pump the mixed compound around the assembly and degas under vacuum for a void-free pot in critical work. Cure for 24 hr at 25C, or 8 hr plus 2 hr at 65C.
Ordering and Product Support
Insulcast RTVS 42 Curtis II 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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