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3M 401+

Green masking tape

About 3M 401+

3M 401+, previously known as 3M 233+, is a high performance paint masking tape designed for automotive, specialty vehicle and industrial manufacturers.

The fourth tape in 3M’s Masking Made Simple portfolio, this material is best used in critical masking applications where strong holding and high temperature performance is required.

3M 401+ instantly sticks to most surfaces including metal, rubber, glass, and plastic, as well as EPDM type rubber moldings. The solvent free adhesive removes cleanly from these surfaces without leaving behind any residue. 3M 401+ masking tape can be torn by hand making it easy to use. This 3M green masking tape is widely used in many industries including automotive, general industrial, military, construction, and marine.

3M 401+ Features

  • Tearable by Hand but Resists Slivering Upon Removal
  • Sticks to Many Surface Types and Removes Cleanly
  • Conforms to Irregular Surfaces and Corners
  • Resists Paint Bleed Through with Super Sharp Paint Lines
  • Green Backing Ensures Great Visibility

3M 401+ is a high performance masking tape for applications requiring high temperatures from industrial paint systems. It has a maximum operating temperature of 250 degrees Fahrenheit for up to 30 minutes creating sharp paint lines in room temperature or paint-bake operations.

Converting 3M 401+

3M 401+ can be easily die cut and converted into custom formats depending on your needs.


Strouse can slit rolls of masking tape to custom widths and length. This provides you with tape in the exact width you need for your task at hand. No excess or waste and no more using rolls that are too large and bulky or too small to get the job done.

Die Cutting:

This is the process of cutting a wide roll of masking tape into a custom shape or usable part for your process. Parts can be cut into different formats to fit seamlessly into your assembly.

Individual pieces  Masking tapes can be laminated with liner on the adhesive leaving no exposed adhesive. This means that when parts are die cut they are provided as individual pieces that can be placed inside a bag.  
Sheeted Parts – Some assembly processes require multiple shapes or parts of the same material. This is where sheeted parts come in handy. Multiple parts can be cut onto a single sheet ensuring that your employees will use all of the required parts during assembly. This reduces error in your process as well as the potential for product failure.
Die Cut Parts on a Roll – This is our most popular format for providing die cuts. Custom cut parts can be provided on a liner in the form of a rolled good. This allows for hundreds or thousands of parts to fit on a single roll. This makes application of die cut parts easy and efficient as parts can be removed from the roll and the next part is ready to be peeled and placed.
Tabs or Extended Liners

Die cut solutions are great for hand assembly or automated processes but sometimes removing the backing from an adhesive die cut can be difficult. Strouse simplifies this process by adding a tab to the part or extended liners that make it easy to remove the liner and place the adhesive. Liners can also be split backed saving your assembly team the frustration of removing thin liners while saving you time and money in the process.

Strouse die cuts and converts paper tape and flexible materials to solve many different adhesive applications. Our diverse manufacturing capability allows us to provide you the material you need in the exact size, shape, and format required for your design.

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“Strouse is always there to respond to my requests. They've helped me to source many difficult to find products and their converting capabilities are top notch.”
CamiloAltum Aerospace