Description
Insulcast I-Cast 333 is a thermally conductive, flame retardant epoxy potting compound that protects electronics from heat, moisture, and vibration. Pour or pump it around the assembly and it cures to a tough protective mass that keeps the finished part working in the field.
Insulcast I-Cast 333 Benefits
- Seals out moisture, dust, and contaminants
- Cushions components against shock and vibration
- Moves heat away from hot-running parts at 0.62 W/mK
- Meets UL 94 V0 for fire-safety requirements
- Holds strong dielectric isolation at 410 V/mm
- Cures to a hard Shore D 85 mass
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 to 6 with Insulcure 9
- Viscosity, Part A: 13,000 cP
- Pot life at 25C: 45 minutes with Insulcure 9
- Cure: 8 to 12 hours at 25C or 2 hours at 50C
- Hardness: Shore D 85
- Service temperature: -40 to 105C
- Thermal conductivity: 0.62 W/mK
- Dielectric strength: 410 V/mm
- Flammability: UL 94 V0
Surface Prep and Use
Mix the resin with Insulcure 9 curing agent at 100 to 6 by weight until uniform. Pour or pump around the assembly and degas under vacuum for a void-free pot in critical work. Cure for 8 to 12 hours at 25C or accelerate at 2 hours at 50C.
Ordering and Product Support
Browse the full range of encapsulants and potting compounds, or read more about the Insulcast line from ITW Performance Polymers.
Call (800) 220-1966 or email [email protected] for pricing, lead time, and technical help.
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