DOWSIL 738 ELECTRICAL SEALANT
Harmonization Code : 3506.91.90.99 | Prepared glues and other prepared adhesives, not elsewhere specified or included; products suitable for use as glues or adhesives, put up for retail sale as glues or adhesives, not exceeding a net weight of 1 kg ; Adhesives based on polymers of headings 3901 to 3913 or on rubber; Other ; Other
Main features
- One-Part Moisture-Cure Sealing
- Non-Sag Placement Control
- 500% Cured Elongation
Product Description
DOWSIL™ 738 Electrical Sealant is a one-part, white, non-flowing moisture-cure silicone adhesive and sealant for bonding and sealing electrical assemblies. It cures at room temperature without component mixing or oven curing and can be heat-accelerated when faster in-line processing is required. The cured elastomer combines 500% typical elongation with Shore A 35 hardness, providing flexibility and stress relief in electrical components, circuit boards, assemblies and housings.
Key features
- One-part moisture cure: Requires no component mixing and cures at room temperature without an oven.
- Non-flowing consistency: Supports controlled application and placement during bonding and sealing operations.
- Flexible cured elastomer: Provides 500% typical elongation for stress relief in electrical assemblies.
Applications / Suitable for
- Bonding and sealing electrical assemblies
- Circuit boards and assembled electronic systems
- Electrical components and housings
- Battery-pack assembly applications
TDS, SDS & Technical Documents
Technical Specifications
General Properties
Physical Properties
Mechanical Properties
Physical Properties
Electrical Properties
Thermal Properties
Mechanical Properties
Additional Information
As-supplied / before-processing properties
Typical characteristics of the sealant before cure. Typical values are not intended for use as specifications.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Color | White | — | As supplied; typical |
| Flow characteristic | Non-flowing | — | As supplied |
| Specific gravity | 1.04 | — | At 25°C; typical |
| Tack-free time | 89 | minutes | At 50% relative humidity; typical |
| Cure system | Moisture cure | — | One-part, room-temperature cure; optional heat acceleration |
After-processing / final-state properties
Typical properties of the cured silicone elastomer. Typical values are not intended for use as specifications.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Durometer hardness | 35 | Shore A | Cured material; typical |
| Elongation | 500 | % | Cured material; typical |
| Tensile strength | 360 | psi | Cured material; typical |
