3M 3901
Harmonization Code : 3506.91.90.99 | Prepared glues and other prepared adhesives, not elsewhere specified or included; products suitable for use as glues or adhesives, put up for retail sale as glues or adhesives, not exceeding a net weight of 1 kg ; Adhesives based on polymers of headings 3901 to 3913 or on rubber; Other ; Other
Main features
- Low-Viscosity Surface Wetting
- Quick-Drying One-Component Application
- Improved Metal Corrosion Protection
Product Description
3M Scotch-Weld Metal Primer 3901 is a red, low-viscosity, one-component liquid primer for preparing metal and glass before bonding with compatible 3M Scotch-Weld film and liquid structural adhesives. It wets treated surfaces thoroughly and dries quickly, simplifying application before adhesive placement. The primer helps maintain cleaned surfaces in a relatively oxidation-free condition until bonding is completed. In the bonded interface, it improves adhesion and resistance to environmental exposure while adding corrosion protection on metal. The 3 to 8 cP viscosity supports thin, even coverage for glass and metal assemblies that require controlled primer application and dependable structural-adhesive preparation.
Key features
- Low-Viscosity Surface Wetting: The 3 to 8 cP liquid spreads readily for complete wetting before adhesive placement.
- Quick-Drying One-Component Application: The ready-to-use primer simplifies surface preparation without component mixing.
- Metal Corrosion Protection: The dried primer improves resistance to corrosion and environmental exposure on metal.
Applications
Suitable for priming metal and glass before compatible 3M Scotch-Weld film and liquid structural adhesives.
TDS, SDS & Technical Documents
Technical Specifications
General Properties
Physical Properties
Other Properties
Additional Information
As-supplied / before-processing properties
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Physical state | Liquid | - | As supplied |
| Color | Red | - | As supplied |
| Viscosity | 3 to 8 | cP | As supplied |
| Density | 0.80 | g/ml | As supplied |
| Flash point | 52 | deg F | Closed cup |
| Boiling point | 148 | deg F | As supplied |
Final-state / after-processing properties
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Adhesion function | Improves metal and glass adhesion | - | Compatible 3M film and liquid structural adhesives |
| Corrosion protection | Improved | - | Metal surfaces |
| Environmental-exposure resistance | Improved | - | Primed metal interface |
| Cleaned-surface protection | Maintains relatively oxidation-free condition | - | Until bonding is completed |
