High-performance, one-component, moisture-curing silicone adhesive with excellent adhesion to low-surface-energy substrates.
Offers outstanding resistance to thermal cycling, UV exposure, and weathering over extended service life.
Provides flexible, durable bond lines with high elongation (>200%) and strong tear resistance.
Low modulus formulation minimizes stress transfer to bonded components, ideal for dissimilar material assemblies.
Meets UL 94 HB flammability rating and complies with RoHS and REACH regulatory requirements.
Automotive lighting assemblies—including headlamp and taillamp lens-to-housing bonding.
Electronics encapsulation and gasketing for outdoor sensors, EV battery modules, and power electronics housings.
Architectural glazing and structural sealing of glass, aluminum, and coated metal façade components.
Industrial appliance assembly—such as oven doors, microwave cavities, and HVAC control panels.
Medical device housing bonding where biocompatibility support and long-term environmental stability are required.
| Chemical Type | Acetoxy-cure silicone polymer |
| Product Form | Paste, thixotropic, ready-to-use |
| Appearance | Opaque white or off-white paste |
| Primary Applications | Bonding, sealing, and gasketing of rigid substrates |
| Key Features | Moisture-curing, non-corrosive, low shrinkage |
| Benefits | Room-temperature cure, no mixing required, excellent gap-filling capability |
| Cure Speed (Surface Dry) | ~15–30 minutes at 23°C / 50% RH |
| Shelf Life (Unopened) | 9 months from date of manufacture when stored at ≤25°C |
Q1: What are the primary application methods for DOWSIL 3-6876?
A: DOWSIL 3-6876 is typically applied via dispensing equipment—such as time-pressure or volumetric systems—and can also be applied manually using a syringe or spatula for prototyping or low-volume assembly. Surface preparation and controlled cure conditions are recommended to ensure optimal bond integrity.
Q2: Is DOWSIL 3-6876 suitable for bonding dissimilar substrates, such as silicone to metal or plastic?
A: Yes, DOWSIL 3-6876 is formulated to provide strong adhesion across a broad range of substrates—including metals, glass, ceramics, and many thermoplastics—as well as silicone elastomers. Performance may vary depending on surface energy, cleanliness, and post-cure conditions.
Q3: How does humidity affect the cure profile of DOWSIL 3-6876?
A: As a moisture-curing silicone adhesive, DOWSIL 3-6876 relies on ambient atmospheric moisture to initiate and sustain its cure reaction. Cure speed increases with higher relative humidity and temperature, while low-humidity environments may extend surface tack time and through-cure duration.
Q4: Can DOWSIL 3-6876 be overcoated or encapsulated after curing?
A: Fully cured DOWSIL 3-6876 is generally compatible with common silicone-based coatings and encapsulants. However, compatibility with non-silicone systems (e.g., epoxies or polyurethanes) should be verified through application-specific testing due to potential interfacial adhesion or inhibition effects.
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E-mail: wangxingqiang@ericwchem.com
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