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Technical Product Information |  |
| DOWSIL™ 748 Non-Corrosive Sealant White 300 ML |
| Product Overview |
| DOWSIL™ 748 Non-Corrosive Sealant is a 1-part, non-slump, neutral alkoxy-cure room temperature vulcanizing (RTV) silicone adhesive and sealant specially designed for corrosion-sensitive electronics and metals. Curing at room temperature upon exposure to atmospheric moisture, it releases a non-corrosive, low-odor byproduct. It provides excellent unprimed adhesion to glass, metals (including copper and brass), ceramics, and engineering plastics. The 300 ml cartridge allows easy manual or pneumatic dispensing. |
| Key Features and Benefits |
| • Non-Corrosive Neutral Alkoxy Cure: Safe for sensitive electronics, copper, brass, silver, and other delicate metallic substrates. • UL 94 HB & FDA Compliance: Meets UL flame classification standards and complies with FDA 21 CFR 177.2600 for indirect food contact. • Non-Slump Paste: Suitable for vertical and overhead applications without sagging or slumping. • Unprimed Adhesion: Excellent primerless bonding to metals, glass, ceramics, and rigid plastics. • Broad Operating Temperature: Retains full flexibility from -55°C to +180°C (-67°F to +356°F). • Low Odor: Produces minimal odor during the cure process. |
| Technical Specifications |
| • Color: White / Off-white • Packaging / Volume: Cartridge / 300 ml • Cure System: Neutral Alkoxy (RTV) • Skin-Over Time (@ 23°C, 50% RH): ~15-30 Minutes • Tensile Strength: ~1.9 MPa • Elongation at Break: 350% • Hardness (Shore A): ~35 • Service Temperature Range: -55°C to +180°C (-67°F to +356°F) |
| Applications |
| • Securing and insulating electronic components, power supplies, transformers, and sensors. • Sealing electrical control boxes, junction enclosures, and delicate metal housings. • Commercial food processing machinery and home appliance manufacturing. • Industrial bonding and sealing applications where acetoxy cure vapors cannot be tolerated. |
Usage Note: Ensure substrate surfaces are clean, dry, and free from oil or grease prior to application. Dispense easily using standard manual or pneumatic caulking guns.
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