DOWSIL

DOWSIL™ 748 Non-Corrosive Sealant White 22.4 KG | Official Distributor

Barcode : 1.YP.DC1.EY.BL.ST.BS.015

Request a Quote

Technical Product Information

DOWSIL™ 748 Non-Corrosive Sealant White 22.4 KG

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. Packaged in a 22.4 KG pail for automated industrial dispensing, it provides excellent unprimed adhesion to glass, metals (including copper and brass), ceramics, and engineering plastics.

Key Features and Benefits

• Non-Corrosive Neutral Alkoxy Cure: Safe for sensitive electronics, copper, brass, silver, and other delicate metallic substrates.
• Industrial 22.4 KG Pail: Designed for seamless integration with automated follower-plate dispensing pumps.
• 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 / Net Weight: Pail / 22.4 KG
• 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

• Automated securing and insulating of electronic components, power supplies, transformers, and sensors.
• Sealing electrical control boxes, junction enclosures, and delicate metal housings on continuous lines.
• 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. The 22.4 KG pail is designed for use with pneumatic follower-plate dispensing pumps.