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TSE 3941-W (150gm Tube)
GEE25008
TSE3941 (White) – Flame-Retardant, High-Strength Silicone Adhesive Sealant for Demanding Electronic Applications
TSE3941-W is a one-component, ready-to-use, non-corrosive silicone adhesive sealant that cures at room temperature upon exposure to atmospheric moisture, forming a flame-retardant, elastic silicone rubber with exceptional mechanical strength and thermal stability.
Formulated for high-reliability applications, the TSE3941-W features a fast tack-free time of just 5 minutes, UL 94 V-0 recognition (File No. E56745), and excellent adhesion to metals, plastics, and ceramics without corroding sensitive conductors such as copper or brass. Its non-flowable paste consistency ensures precise bead placement on horizontal, vertical, and overhead surfaces, while its low-volatility formulation (<0.005% volatile siloxanes) meets stringent outgassing requirements for sensitive environments.
Unlike acetoxy-cure silicones, TSE3941-W utilises an alcohol-based (alkoxy) cure system, releasing only a mild, non-objectionable odour, making it ideal for indoor, enclosed, or cleanroom assembly processes.
Key Features
- UL 94 V-0 flame retardant – certified for fire-safe electronics
- High tensile strength: 4.2 MPa (43 kgf/cm²)
- High hardness: 76 Shore A – ideal for structural bonding
- Fast tack-free time: 5 minutes at 23°C / 50% RH
- Non-corrosive to copper, brass, and other sensitive metals
- Low volatile content: <0.005% – suitable for high-purity or aerospace applications
- Thermally conductive: 0.7 W/(m·K) – aids heat dissipation
- Excellent long-term adhesion – maintains bond strength after 500+ hours at 150°C
- Alcohol-based cure – low odour, non-corrosive by-products
Typical Applications
- Flame-resistant potting and sealing of power electronics, LED drivers, and battery systems
- Structural bonding of heat-generating components requires thermal management.
- Encapsulation in automotive, aerospace, and industrial control systems, where fire safety is critical
- Sealing of electronic housings exposed to high temperatures and environmental stress
Technical Notes
- Cured density: 1.71 g/cm³
- Elongation: 80% – provides rigidity with minimal flexibility
- Adhesion strength (aluminium lap shear): 2.0 MPa (20 kgf/cm²)
- Volume resistivity: 2.3 × 10¹⁵ Ω·cm
- Dielectric strength: 21 kV/mm
- Service temperature: up to 200°C (392°F) continuous
- Maximum recommended thickness: 6 mm (¼ in.) – standard for moisture-cure silicones
Certifications & Compliance
- UL 94 V-0 recognised (File No. E56745)
- Meets electrical and thermal reliability standards for long-term high-temperature use
- Free of intentional PTFE and PFAS
Packaging Options
- 150 g collapsible tubes (20 per case)
- 333 ml caulking cartridges (50 per case: 5 boxes of 10)
Processing Recommendations
- Apply to clean, dry surfaces – no primer required for most substrates
- Full cure (3 mm thickness): ~48 hours at 23°C / 50% RH
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TSE3941 (White) – Flame-Retardant, High-Strength Silicone Adhesive Sealant for Demanding Electronic Applications
TSE3941-W is a one-component, ready-to-use, non-corrosive silicone adhesive sealant that cures at room temperature upon exposure to atmospheric moisture, forming a flame-retardant, elastic silicone rubber with exceptional mechanical strength and thermal stability.
Formulated for high-reliability applications, the TSE3941-W features a fast tack-free time of just 5 minutes, UL 94 V-0 recognition (File No. E56745), and excellent adhesion to metals, plastics, and ceramics without corroding sensitive conductors such as copper or brass. Its non-flowable paste consistency ensures precise bead placement on horizontal, vertical, and overhead surfaces, while its low-volatility formulation (<0.005% volatile siloxanes) meets stringent outgassing requirements for sensitive environments.
Unlike acetoxy-cure silicones, TSE3941-W utilises an alcohol-based (alkoxy) cure system, releasing only a mild, non-objectionable odour, making it ideal for indoor, enclosed, or cleanroom assembly processes.