DOWSIL™ 748 Non-Corrosive Sealant - Neutral Cure RTV Adhesive

DOWSIL™ 748 Non-Corrosive Sealant

Neutral-cure RTV sealant designed for sensitive electrical and bonding applications, offering corrosion resistance, low odor, and compliance with FDA regulations.

Key Features and Benefits

• Non-Corrosive Formula: Ideal for electrical and PCB assemblies without adverse effects on sensitive components.
• Low Odor: Alkoxy cure ensures easy handling with minimal odor.
• FDA Compliance: Meets CFR 177.2600 for indirect food contact applications.
• Exceptional Adhesion: Bonds to metals, glass, and nylon without the need for primers.
• Durable Flexibility: Maintains flexibility across a wide temperature range.
• Weather-Resistant: Withstands exposure to ozone, moisture, and water.

Detailed Product Description

DOWSIL™ 748 Non-Corrosive Sealant is a high-performance RTV adhesive/sealant engineered for corrosion-sensitive and general-purpose applications. Its neutral-cure formula ensures reliable bonding and sealing, especially for electrical and PCB assemblies. With UL listing and compliance with FDA and NSF regulations, this versatile sealant is ideal for industrial, electrical, and consumer applications.

Offering excellent dielectric properties and strong adhesion to a variety of materials, including metals, glass, and plastics, DOWSIL™ 748 is particularly suitable for environments where odor and corrosion must be minimized. It remains flexible even after prolonged exposure to temperature extremes and weathering conditions.

This product was previously branded as Dow Corning. Learn more about this transition in our detailed blog post.

Applications

• General-purpose bonding and sealing.
• Electrical and PCB system assemblies.
• Waterproofing and protecting sensitive instrumentation.
• Industrial and consumer-grade adhesive for components and housings.

Technical Specifications

• Product Type: RTV Adhesive/Sealant
• Cure Type: Neutral (Alkoxy)
• Number of Parts: 1
• Temperature Range: -65°C to 177°C (-85°F to 350°F)
• Shelf Life: 720 Days
• Color: White
• Durometer: 35 Shore A
• Elongation: 350%
• Tensile Strength: 275 psi
• Dielectric Strength: 475 volts per mil

Available Sizes and Part Numbers

Why Choose DOWSIL™ 748 Non-Corrosive Sealant?

• Primerless adhesion to common materials.
• Safe for sensitive electrical applications.
• Excellent moisture and water resistance.
• FDA-compliant for indirect food contact.