Momentive SnapSil TN3005 UL94 HB Recognized Low Volatile Siloxane Primerless Adhesion Silicone Adhesive Sealant for Electronic Components
Momentive SnapSil™ TN3005 is a one-component, low volatile siloxane silicone adhesive sealant. It cures at room temperature upon exposure to atmospheric moisture, forming a flexible and durable silicone elastomer. Designed for applications requiring reliable sealing and adhesion.
This sealant provides primerless adhesion to various substrates used in electrical and electronic equipment manufacturing, including metals, plastics, and glass. Features include:
- Fast tack-free time
- Low-odor alcohol vapor release during cure
- Non-corrosive to most metals
- Flame retardant properties (UL94 HB recognized)
| Property | Test Method | Value | Unit |
|---|---|---|---|
| Typical Physical Properties | |||
| Consistency | JIS K 6249 | Non-slump | - |
| Hardness | JIS K 6249 | 35 | Shore A |
| Tensile Strength | JIS K 6249 | 1.8 | MPa |
| Elongation at Break | JIS K 6249 | 250 | % |
| Adhesion Performance (Cohesive Failure) | |||
| Aluminum | In-house method | Good | - |
| Stainless Steel | In-house method | Good | - |
| Glass | In-house method | Good | - |
| ABS | In-house method | Good | - |
| PC | In-house method | Good | - |
| Cure Depth | |||
| @ 25°C, 50% RH | In-house method | 3.0 | mm |
| @ 25°C, 90% RH | In-house method | 4.5 | mm |
| Flame Retardancy | |||
| UL 94 | UL 94 | HB | Class |
TN3005 demonstrates excellent adhesion performance, often resulting in cohesive failure within the silicone itself rather than adhesive failure at the bond line, indicating strong bond strength. Its cure profile depends on environmental humidity and temperature, allowing cure depth management based on application conditions. Key features include:
- Low volatility minimizes potential contamination in sensitive electronic assemblies
- Flexible and durable cured elastomer
- Moisture-cure technology
SnapSil TN3005 is used for:
- Insulating adhesive sealing, fixing, and waterproofing in electrical/electronic equipment
- Potting and sealing sensors, connectors, and housings
- Securing and insulating wires and components on PCBs
- Environmental seals for electronic control units and outdoor communication devices
- General adhesive for bonding metals, glass, and various plastics
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