Description
Chem-Set™ 412 Clear LED Potting Silicone is a two-part, addition-cure silicone elastomer engineered for potting LED light strips, PCBs, and sensitive electronics. With a crystal-clear finish, low viscosity, and excellent UV stability, it ensures maximum light transmission while protecting components from moisture, shock, vibration, and temperature extremes.
Pre-filled 1:1 dual cartridges simplify application—no manual mixing or guesswork. Chem-Set 412 flows easily around intricate parts and cures quickly at room temperature or faster at elevated heat. It’s the ideal solution for LED lighting installations where clarity, durability, and electrical insulation are mission-critical.
Key Features & Benefits
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Crystal-clear, non-yellowing finish for high light transmittance
- Available in 50ml, 300ml, and 600ml cartridges – no mixing needed
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Low shrinkage (0–4%) protects delicate electronic assemblies
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Flexible and shock-absorbing to prevent cracking or vibration damage
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Excellent dielectric properties (500 V/mil)
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Fast room temp cure or 30 mins @ 150°C
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UL 94 HB flame-rated (File: QMFZ2.E205830)
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Broad thermal stability from –55°C to 204°C (–67°F to 399°F)
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Low toxicity and safe for sensitive PCB materials
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Self-leveling flow simplifies potting around small components
Common Applications
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LED strip light potting (indoor & outdoor)
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Outdoor signs and architectural lighting
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Electronic component encapsulation
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PV module & concentrator protection
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Aerospace displays and instrumentation
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High-humidity or vibration-prone electronics
Technical Specifications
| Property | Value |
|---|---|
| Mix Ratio (by weight) | 1:1 |
| Cure Type | Addition |
| Gel Time @ 25°C | 30 minutes |
| Cure Time @ 150°C | 30 minutes |
| Viscosity (Part A & B) | 6000 cP |
| Hardness | 40 Shore A |
| Elongation at Break | 100% (ISO 37) |
| Tensile Strength | 4.14 N/mm² (600 psi) |
| Thermal Conductivity | 0.18 W/mK |
| Refractive Index | 1.4 |
| Dielectric Strength | 500 V/mil |
| Temperature Range | –55°C to 204°C |
| Linear Shrinkage | <4% |
| Color | Transparent and colorless |
| Shelf Life | 24 months @ ≤100°F (38°C) |
| UL File Number | QMFZ2.E205830 |
Compliance & Certifications
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UL 94 HB Listed (QMFZ2.E205830)
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RoHS Compliant (contact for documentation)
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Low toxicity, non-corrosive formula suitable for sensitive electronic environments
Compatible Substrates
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FR4 circuit boards
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LED strip backers (aluminum, polycarbonate)
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Wire insulation and connectors
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Acrylic, ABS, PVC (with surface prep)
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Metal housings & thermoplastic enclosures
Packaging & Ordering Info
Chem-Set 412 is available in:
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50ml dual cartridges
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300ml dual cartridges
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600ml dual cartridges
All packaging is pre-filled and designed for use with standard 1:1 static mix tips—no manual mixing required. For bulk or custom orders, contact our sales team.
Need Help Choosing a Potting Silicone?
Get expert support from the Chemical Concepts team. Whether you’re potting outdoor signage, backlighting a retail fixture, or sealing sensitive PCBs—we’re here to help.
📞 Call us at 800-220-1966
📧 Email: [email protected]
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