Description
Insulcast MRTV 9 is a two-part RTV silicone potting compound that protects electronics from heat, moisture, and vibration. Mix Part A and Part B, then pour or pump it around an assembly and it cures to a tough, resilient mass that keeps the finished part running in the field. It is thermally conductive and rated UL 94 V0.
Insulcast MRTV 9 Benefits
- Seals out moisture, dust, and contaminants
- Cushions components against shock and vibration
- Carries heat away from hot-running parts (0.26 W/mK)
- Meets UL 94 V0 for flame-retardant requirements
- Strong dielectric protection (550 V/mm) for reliable electrical isolation
- Wide service range from -55 to 204 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): 100:10
- Viscosity (Part A): 100,000 cP
- Pot life (25C): 1.5 to 2 hr
- Cure: 16 to 24 hr at 25C, 3 to 4 hr at 50C, 1 to 2 hr at 65C
- Hardness: Shore A 24
- Service temperature: -55 to 204 C
- Thermal conductivity: 0.26 W/mK
- Dielectric strength: 550 V/mm
- Flammability: UL 94 V0
Surface Prep and Use
Mix Part A and Part B at 100:10 by weight and stir to a uniform color. Pour or pump the mixed compound around the assembly, then degas under vacuum for a void-free pot in critical work. Cure 16 to 24 hr at 25C, or accelerate at 50C to 65C. Clean, dry surfaces give the best adhesion.
Ordering and Product Support
Insulcast MRTV 9 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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