DOWSIL™ 733 Glass & Metal Sealant - High-Performance RTV Silicone

DOWSIL™ 733 Glass & Metal Sealant

Premium acetoxy RTV silicone sealant with adhesion promoter, offering exceptional unprimed adhesion to glass, metals, and plastics for industrial and OEM applications.

Key Features and Benefits

• Unprimed Adhesion: Bonds effectively to cleaned substrates, including glass, metals, and plastics, without requiring a primer.
• Durable in Extreme Conditions: Maintains flexibility from -57°C to 177°C (-70°F to 350°F) with intermittent peaks up to 204°C (400°F).
• Weather and Vibration Resistant: Offers excellent resistance to moisture, ozone, vibration, and weathering for long-term reliability.
• Certified for Safety: Complies with FDA, NSF, and UL standards, making it suitable for a variety of regulated applications.
• Versatile Color Options: Available in clear, white, black, and aluminum to match specific project requirements.

Detailed Product Description

DOWSIL™ 733 Glass & Metal Sealant is a high-performance one-part acetoxy RTV silicone sealant designed for bonding and sealing glass, metals, and plastics. Engineered with an adhesion promoter, this sealant provides exceptional unprimed adhesion to cleaned substrates, making it ideal for demanding industrial, OEM, and construction applications.

This sealant remains flexible across a wide temperature range and resists moisture, ozone, vibration, and extreme weather conditions. Its paste-like consistency ensures easy application without sagging or slumping, even on vertical surfaces.

Learn more about the transition from Dow Corning to DOWSIL™ in our detailed blog post.

Applications

• OEM bonding and sealing for appliances, heavy equipment, and marine vehicles.
• Sealing glass and metal components in recreational vehicles and construction projects.
• High-durability industrial applications requiring vibration and weather resistance.

Technical Specifications

• Product Type: RTV Silicone Sealant
• Cure System: 1-Part Room Temperature Cure
• Adhesion: ABS, Copper, Glass, Nylon 6/6, Steel, Galvanized
• Temperature Range: -57°C to 177°C (-70°F to 350°F); intermittent up to 204°C (400°F)
• Colors Available: Clear, White, Black, Aluminum
• Tack-Free Time: 20 minutes
• Elongation: 500%
• Tensile Strength: 335 psi
• Shelf Life: 900 Days

Available Sizes and Part Numbers

Why Choose DOWSIL™ 733 Glass & Metal Sealant?

• Reliable bonding and sealing for industrial, marine, and OEM applications.
• Certified for safety and suitable for FDA-compliant projects.
• Backed by the trusted DOWSIL™ brand legacy.