3M™ Tape Adhesion Promoter 86A

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7 x 7 Inch Cloth (Single) 7 x 7 Inch Cloth (5 Pack) 16 Ounce Can
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3M Adhesion Promoter 86A is a liquid primer designed to be used with 3M Polyurethane Protective Tapes and Boots and other acrylic adhesives to enhance initial adhesion in demanding situations.

Available in a 16oz. can or a 7in x 7in transparent cloths.

Intended for use in enhancement of 3M Polyurethane Protective Tape adhesion levels to certain types of surfaces. It is most effective when used over polyurethane enamel surfaces.
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  • Active Ingredient: Polyamide Resin
  • Solvent: Isopropyl Alcohol, N-Propyl Alcohol
  • Solids: 6.5%
  • Color: Transparent, Colorless
  • Viscosity: Approximately 100 cps
  • Flashpoint: 53F (12C) Flammable Liquid
  • Net Weight: .95 lbs./pint
  • Storage: Store at 60-80F (16-27C). Lower temperature storage will cause, 3M 86A Promoter to gel.
  • Shelf Life: Two (2) years from date of manufacture



Received as expected. Your service was outstanding. I appreciate the prompt response.

Kristopher N
November 11, 2019


Please note, Aircraft Spruce's personnel are not certified aircraft mechanics and can only provide general support and ideas, which should not be relied upon or implemented in lieu of consulting an A&P or other qualified technician. Aircraft Spruce assumes no responsibility or liability for any issue or problem which may arise from any repair, modification or other work done from this knowledge base. Any product eligibility information provided here is based on general application guides and we recommend always referring to your specific aircraft parts manual, the parts manufacturer or consulting with a qualified mechanic.

Q: What is the cloth for P/N 05-03479? Is it impregnated with the promoter so I don't have to buy a whole pint? If so, that would be perfect.

Yes, it is a cloth with the promoter impregnated to prepare a surface for the 3M tapes.

Q: Is the 86A cloth a single cloth or a 5-pack? I see them elsewhere as a 5-pack.

Part # 05-03479 is priced and sold as a single cloth.

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