3M EC-3901

Harmonization Code : 3214.10.00 | Putty and other mastics | Resin cements, caulking compounds and other mastics

3M EC-3901

Main features

  • Metal And Glass Surface Priming
  • Improved Metal Corrosion Protection
  • Clean Surface Oxidation Protection

Product Description

3M Scotch-Weld Structural Adhesive Primer EC-3901 is a red, one-component metal and glass primer for use before compatible 3M Scotch-Weld film and liquid structural adhesives. Its low-viscosity liquid wets prepared surfaces and is designed to improve adhesion while adding corrosion protection and resistance to environmental exposure on metal. The primer also protects cleaned surfaces from oxidation while bonding operations are scheduled. Use it in prepared metal and glass bonding processes where a dedicated primer layer is needed before the structural adhesive is applied.

Key features

  • Metal And Glass Adhesion Primer: The one-component liquid prepares compatible metal and glass for structural bonding.
  • Improved Metal Corrosion Protection: The primer adds protection against corrosion and environmental exposure on metal.
  • Cleaned Surface Protection: Primed surfaces remain protected from oxidation until bonding can be completed.

Applications

Prepared metal and glass surfaces before compatible 3M Scotch-Weld film and liquid structural adhesive application.

Product Family

3M EC-3901

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TDS, SDS & Technical Documents

Technical Specifications

General Properties
Color
The color
red
Physical Properties
Net Weight
779 kg/m3
Viscosity
Viscosity is a measurement of a fluid’s resistance to flow. Viscosity is commonly measured in centiPoise (cP). One cP is defined as the viscosity of water and all other viscosities are derived from this base. MPa is another common unit with a 1:1 conversion to cP. A product like honey would have a much higher viscosity -around 10,000 cPs- compared to water. As a result, honey would flow much slower out of a tipped glass than water would. The viscosity of a material can be decreased with an increase in temperature in order to better suit an application
5 mPa.s
Thermal Properties
Flash Point
The flashpoint of a solvent is the lowest possible temperature at which it can vaporize to form an ignitable vapor. Flashpoint is often confused with “autoignition temperature”, which is the temperature at which a solvent ignites without an ignition source.
16 °C

Additional Information

Technical properties

As-supplied / before-processing properties

PropertyValueUnitMethod / condition
Product typeOne-component primer-As supplied
ColorRed-As supplied
ViscosityLow-Liquid primer for wetting prepared surfaces

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