3M is constantly working to meet the evolving challenges of the aerospace industry professionals worldwide. If you need help finding and existing solution or would like to talk about ideas your working on, get in touch with us.
Thank you for contacting 3M. A representative will contact you shortly.
An error has occurred while submitting. Please try again later...
Improves adhesion to glass and metal
Increases resistance to environmental exposure with epoxy and urethane structural adhesives
Protects cleaned surfaces until bonding operations can be completed
Offers improved corrosion protection to metal for long-lasting performance
Ensures complete wetting of adhesive to adherend surfaces
Applies easily and dries quickly
3M™ Scotch-Weld™ Metal Primer EC-3901 is used for improved metal and glass adhesion or resistance to environmental exposure with epoxy and urethane structural adhesives. EC-3901 ensures complete wetting of adhesive to adherend surfaces. This primer can simplify production scheduling by protecting the cleaned surfaces until the bonding operations can be completed.
A primer for Scotch-Weld™ film and liquid adhesives where it is desired to obtain improved metal and glass adhesion
Improves Adhesion to Glass and Metal
3M™ Scotch-Weld™ Metal Primer EC-3901 is a one-component metal and glass primer designed for applications using 3M™ Scotch-Weld™ film and liquid structural adhesives. Formulated to improve adhesion to metal and glass, this primer simplifies production scheduling by protecting the cleaned surfaces until the bonding operations can be completed. EC-3901 also offers resistance to environmental exposure, as well as metal corrosion protection. 3M™ Scotch-Weld™ Metal Primer EC-3901 features low viscosity for ease-of-application and ensures complete wetting of the adhesive to adherend surfaces, providing an ideal application surface.
The Primer Advantage
3M™ Scotch-Weld™ Metal Primer EC-3901 helps protect metal surfaces against corrosion. Let our unparalleled technical service and support show you how this surface treatment can make a difference to your primer line. EC-3901 also offers these benefits:
Ensures that surfaces remain relatively free of oxidation until the bonding application is completed
Applies easily by spraying or brushing
Can be used on various metal substrates
Primed for Take-Off
In general, 3M Scotch-Weld™ primers complement the Scotch Weld™ Structural Adhesives portfolio and can be used to protect prepared substrates to be bonded. They facilitate "wet-out" of the primary adhesive agent to facilitate the bond between substrate and coating extrudate, and then are cured to enhance chemical resistance. Our primers help prepare the surfaces for the bonding agents and improve the conditions so that stronger, longer lasting bonds are created.
The following data shows data using EC-3901 on various metal substrates:
Overlap Shows Strength at -67°F (-55°C) 75°F (24°C) 180°F (82°C)
50 MIL 6-4 Titanium Alloy
AF-126 0.06 wt.
50 MIL 7-7 Stainless Stee
AF-126 0.06 wt.
Our Best for Your Best
3M is proud to partner with organizations across the spectrum of aerospace and related industries. Enabling efficiencies, reducing process times and lowering aircraft weight is how 3M executes its never-ending mission to offer best-in-class adhesives, sealants, surface protection products and composite resins that effectively reduce costs on multiple fronts. Professionals across the industry know the numerous advantages of 3M Aerospace. The brand is widely recognized for the highest standards of quality and performance, adding value to the final results. By engineering reliability, longevity and value into all of its products, 3M has a history of saving money by reducing waste, rework and time.
Find what you need in our aerospace specification portal.
3M maintaints partnerships with every major aircraft OEM in the world. Find your spec today.