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3M™ Extreme Sealing Tape
  • Goes on fast and stays stuck
  • Immediately seals out rain, snow, sun, wind, and more
  • Instantly paintable to blend with joined surfaces
  • Provides consistent, waterproof bond over edges, uneven contours, and even mechanical fasteners
  • Tough, flexible ionomer backing resists abrasions
  • Also known as “Single Sided VHB™ Tape”

Interested in this product?

Please feel free to Contact Us if you have any questions.

Product Summary

3M™ Extreme Sealing Tape is a highly conformable, single coated adhesive tape that provides a consistent watertight seal over edges, contours and even mechanical fasteners. 3M™ VHB™ acrylic technology absorbs vibrations and holds securely through sun, rain, snow, temperature extremes and humidity for an instant seal that rolls on fast and looks good. Extreme Sealing Tape saves time and money by eliminating the need for additional tools that require storage and cleaning, and create unnecessary waste.


3M™ Extreme Sealing Tape, also referred to as “single sided VHB™ tape,” sticks immediately to metals, plastics and other substrates without drying time, dripping, oozing, or clean-up. Simply unwind the tape and press it into place to provide a water and airtight seal or seam in the following areas:

  • RV & Trailer Roofs
  • Mobile & Office Trailers
  • Leak Patching & Repairs
  • Sealing Over Existing Joints & Seams
  • Awnings
  • Skylights
  • Sealing Around Mechanical Fasteners
  • Window & Door Sealing


Conformable 3M™ acrylic forms an even bond over contours, edges, rivets and screws for a water tight seal while the tough ionomer backing resists abrasions and harsh outdoor conditions. Proven 3M™ adhesive tape even bonds to itself for unbeatable performance on overlapping seams and joints.

3M™ Extreme Sealing Tape is available in 3 colors and offers an instantly paintable surface to match substrates. The following options are available:

  • 4411N: 40 mils Natural/Translucent
  • 4411G: 40 mils Gray
  • 4411B: 40 mils Black
  • 4412N: 80 mils Natural/Translucent
  • 4412G: 80 mils Gray


3M™ Extreme Sealing Tapes are available 40 mils or 80 mils thick. Standard tapes are 0.75″, 1″, 2″, 2.5″, 3″ and 4″ wide and self-wound on a 3″ core tube. LAMATEK can also provide custom width tapes by request.


As a 3M™ Select Converter, LAMATEK also manufactures die-cut gaskets and custom fabricated parts for trailers and mobile homes.

Noteworthy Tip

It is often required to overlap 3M™ Extreme Sealing Tape onto itself. In this case, the ionomer backing of the first piece is one of the substrates to which the second piece of tape is bonding. The tapes should overlap at least 2 cm (3/4 in).


Contact us today to find out if 3M™ Extreme Sealing Tape is a good fit for your RV, trailer or mobile home application.

LAMATEK is an authorized 3M™ Select Converter
LAMATEK is an authorized 3M™ Select Converter
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