3M™ Primer 94EF

  • 3M ID B40065506

Adhesion promoter

Useful on a wide variety of substrates


View more details


  • Adhesion promoter
  • Useful on a wide variety of substrates
  • Durable
  • Clean contaminated with a 50/50 mix of isopropyl alcohol and water mixture before application
  • Dries to a clear gloss

3M™ Tape Primer 94 is an adhesion promoter for use in conjunction with 3M™ VHB™ Tape that supports adhesion to critical substrates such as PE, PP, ABS, PET/PBT blends, concrete, wood, glass, metal and painted metal surfaces.

Promotes Adhesion of 3M™ VHB™ Tape to A Variety of Surfaces
Priming a surface can significantly improve initial and ultimate adhesion to many materials such as plastics and paints because of their low surface energy or the additives they may contain. A primer creates a new surface for 3M™ VHB™ Tape to adhere to and can also help impede the migration of additives that may be present in a material. It is important for the user to determine the suitability of the 3M™ VHB™ Tape, the adhesion promoter and the application process.

Provides the Highest Level of Performance Possible on Difficult Substrates
For proper use of 3M™ VHB™ Primer 94EF, the bonding surface must be relatively clean and dry. Apply a thin uniform coating to the bonding surface using the minimum amount that will fully coat the surface. Allow 3M™ VHB™ Primer 94EF to dry thoroughly before applying tape. Make sure the primed surface remains free from contaminants prior to applying the tape. Porous surfaces may require 2 applications for uniform coverage and good adhesion. Allow your first application of primer to dry before applying a second coat (which may be necessary on porous surfaces). 3M™ VHB™ Primer 94EF may be applied with a brush, felt-tip dauber bottle, swab, pressurized flow gun, knurled roller, etc.

Bringing Better Ideas to the Surface through Science
In our 3M Industrial Adhesives and Tapes Division, we apply the science of adhesion to deliver innovative solutions that improve the design and manufacturing processes of companies around the world. In the end, our technologies help customers like you deliver competitive products to the market faster and more efficiently.

Typical Properties

Connect with us. We’re here to help.

Need help finding the right product for your project? Contact us if you need product, technical or application advice or want to collaborate with a 3M technical specialist

Send Us a Message

Thank you for your interest in 3M. In order to help us manage and respond to your query effectively, we politely ask you to provide some key information, including your contact details. The information you provide will be used to respond to your request through email or telephone by a 3M representative or one of our authorised business partners with whom we might share your personal information consistent with the 3M privacy policy

  • 3M takes your privacy seriously. 3M and its authorized third parties will use the information you provided in accordance with our Privacy Policy to send you communications which may include promotions, product information and service offers. Please be aware that this information may be stored on a server located in the U.S. If you do not consent to this use of your personal information, please do not use this system.

  • Send Message

Thank you for your contacting 3M

We have received your message and are now looking into your enquiry
One of our representatives will get in touch with you by phone or email

An error occurred.