Engineered Specifically for Resistance to Chromic Acid
3Mâ„¢ Anodization Masking Tape 8985L has a tough polyester carrier to stand up to chromic acid anodization baths (Type I anodization). It also features a non-silicone rubber adhesive to minimize the risk of silicone contamination that could impact downstream processes such as bonding or paint adhesion. This tape provides sharp masking edges, minimizing leakage and the need for rework, and can be used with or without chemical film on a variety of aluminum and other metal alloys.
3Mâ„¢ Anodization Masking Tape 8985L can replace complex, messy liquid masking and the unpleasant odors involved. The transparent tape is easy to position and can be applied in fewer steps; it also eliminates the cure time of a liquid so that overall masking and de-masking can be accomplished up to five times faster*. Ease of application and clean, one-piece removal mean users could save up to 60%* on labor time and associated costs. This tape is transparent purple with a printed backing for visibility and has a liner for easy die-cutting.
*Up to 5x faster and up to 60% reduction in labor time both based on 3M internal data.
Recommended Applications
- Aerospace components
- Precision machine components
- Welded assemblies
Bringing Better Ideas to the Surface Through Science and Innovation
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.

3M 33349, 641WY 1/4" X 24", 220 Mesh Diamond Cloth Belt, 7010534919
3M 22395, Roloc Disc 361F, 60 YF-weight, TR, 3 in, Die R300V, 7000045098
3M 35790, 675L, 1" X 120", 74u, Diamond Microfinishing Film Belts, 7010509196
3M 11414, Roloc Disc 361F, P120 XF-weight, TR, 1 in, Die R100N, 7000045104
3M 58207, Dynamic Mixing System Nozzle Extension, 12 per bag, 7000120110
Dynabrade 95842 Dynabrade Air Lube 10W/NR, 1 Pint
Dynabrade 11518 Rubber Drive Wheel
Dynabrade 15336 Rubber Drive Wheel
Dynabrade 54972 Vane Set (5pk)
Dynabrade 11399 Type 27 Wheel Mounting Adapter Kit
Dynabrade 52474 Vane Set (4pk)
Dynabrade 11475 Dynabelter Abrasive Belt Tool, Standard Duty
Dynabrade 15101 Tension Arm (for Mini Dynafile II)
Dynabrade 11004 Dynafile Screw-In Housing
Dynabrade 01480 Vane Set (4pk)
Dynabrade 96101 Dynabrade Air Lube 10W/NR 24 Per Box
Dynabrade 07107 Vane Set (5pk)
Dynabrade 95544 Gear Grease, 2.5oz. Tube
Dynabrade 18570 Vane Set (4pk)
Dynabrade 94820 - 3/8" ID, 5' Long Air Hose Assembly, Female/ Male Fitting Ends Included
Dynabrade 14230 Rubber Drive Wheel
Dynabrade 11477 Dynabelter Abrasive Belt Tool, Heavy-Duty
Dynabrade 54705 Rotor/Vane Set
Dynabrade 95843 Dynabrade Air Lube 10W/NR, 1 Gallon
Dynabrade 13509 Dynastraight Finishing Tool, Rear Exhaust, 6,000 RPM, 5/8" (16 mm) or 1" (25 mm) Dia. Arbor
Dynabrade 15420 Dynafile III Abrasive Belt Tool
Dynabrade 10690 Filter/Regulator/Lubricator, FRL40, 1/2" NPTAssy.
Dynabrade 11684 Dynabelter Contact Arm Assembly 4" DIA X 5/8" W., 40 Duro Serrated
Dynabrade 14000 Dynafile Abrasive Belt Tool
Dynabrade 51301 .5 hp Straight-Line Die Grinder
Dynabrade 11005 Dynafile Belt Housing Guard
Dynabrade 53533 Cone or Plug Grinder (Triple Extension)
Dynabrade 40378 Rubber Drive Wheel, Mini Dynafile II
Dynabrade 18426 Vane Set (4pk)
Dynabrade 11486 Dynabelter Accu-Grinder Abrasive Belt Tool, Heavy-Duty
Dynabrade 14360 Pneumatic Pipe Belt Finisher
Dynabrade 64350 26" W x 36" L (660 mm W x 914 mm L) Metal Capture Downdraft Station, 230 V (AC)
Dynabrade 57113 Rotor/Vane Set
Dynabrade 11395 Guide Wheel
Dynabrade 11642 Contact Wheel Ass'y, 4" Dia. x 5/8" W x 5/8" I.D., Scoop Face, 40 Duro Rubber
Dynabrade 11252 Contact Arm Assembly, 3/8" Dia. x 1" W, 40 Duro
Dynabrade 53270 7" (180 mm) Dia. Right-Angle Disc Sander
Dynabrade 07109 Vane Set (5pk)
Dynabrade 95821 Dynabrade Air Lube 10W/NR, 4oz Bottle
Dynabrade 13460 Dynisher Finishing Tool Versatility Kit
Dynabrade 64217 Weatherproof cover with receptacle and lever switch
Dynabrade 78700 D9-8 Cartridge Roll Mandrel 1/8" Pilot Dia. x 1" Pilot Length, 1/4" Dia. Shank x 8" Shank Length
3Mâ„¢ 72010, Replacement Filter Kit 523-01-29, 7000056891, 1 EA/Case
3Mâ„¢ 94275, Versafloâ„¢ Gold Coated Tinted Over-Visor with UV/IR Protection M-967N, 70071696879, 1 EA/Case
3Mâ„¢ 17323, Versafloâ„¢ Respiratory Helmet Assembly M-407, with Premium Visor and Flame Resistant Shroud, 7000002395, 1 EA/Case
3M 31959, 6450J, M125, 1" X 30", Type C, Pattern 18 Diamond Belts, 7100052712
3M 53914, Performance Plus Duct Tape 8979N Nuclear Red, 48 mm x 54.8 m 12.1 mil, 7000049014, 24/ case 