3M 7000046343 Metal Sealant Aluminum 5 Oz Tube

Product Description

The 3M 7000046343 is a one-part, aluminum-colored metal sealant formulated for general purpose sealing in commercial and residential applications. Sold in a 5 oz tube, this medium-viscosity compound air-dries to a tough, flexible film that resists water, oils, and fuel. The cured bond maintains flexibility over time, making it well suited for applications where thermal movement or vibration is a factor. HVAC technicians, glaziers, plumbers, and general contractors reach for this sealant when a durable, aluminum-tinted finish is required on metal or wood substrates.

This sealant is commonly used to bed glass in aluminum window channels, a task that requires a product capable of adhering to smooth, low-porosity surfaces. It bonds well to many metals and woods, making it a versatile option across trade disciplines. Typical install scenarios include sealing around aluminum window frames, metal enclosures, ductwork joints, and similar assemblies where an air- and water-tight seal with a finished aluminum appearance is needed.

Key Features

• One-part formula — no mixing required, ready to apply directly from the tube
• Air-dries to a flexible, tough film that accommodates movement without cracking
• Resists water, oils, and fuel after cure
• Aluminum-colored finish blends with aluminum frames and metal surfaces
• Medium viscosity stays in place on vertical and overhead seams
• Adheres to metals and woods for cross-trade versatility

Compatibility

Designed for use on aluminum, many other metals, and wood substrates. Particularly well suited for bedding glass in aluminum window channels and sealing metal assemblies where an aluminum-tinted sealant is specified.

Installation Notes

Surface preparation is critical — clean all substrates of oil, dust, and loose material before applying. Apply with standard caulk-gun-style pressure or direct tube application and tool the bead before skinning begins. Allow adequate cure time before exposing the joint to water or fuel contact. Follow applicable building codes and manufacturer safety data sheet guidance when working in confined or poorly ventilated spaces.

Technical Specifications

• Color: Aluminum
• Viscosity: Medium
• Container Size: 5 oz Tube
• Cure Method: Air-dry
• Weight: 0.38 pounds
• Unit of Measure: Each

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7000046343