Engineered Specifically for Resistance to Chromic Acid
3M™ 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.
3M™ 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™ 17379, Versaflo™ Length Adjusting Breathing Tube BT-30, 7100009685, 1 EA/Case
Air Turbine Tools 310RSV - 6mm Router Hand Tool Series, 30,000RPM, 33431
3M 06728, Premium Plastic Sheeting with 233+ Masking Tape (36 mm), 16
ft x 400 ft, 7100139893
3M 21543, Scotch-Brite Roloc Clean and Strip XT Pro Extra Cut Disc, TR, 2 in x NH, A XCS, 7100179815, 60/box
3M 03647, Scotch-Brite Edger Disc Pad, 7 in x .875 in, 7000133920
3M 53914, Performance Plus Duct Tape 8979N Nuclear Red, 48 mm x 54.8 m 12.1 mil, 7000049014, 24/ case
3M™ 07010, Supplied Air Respirator Hose W-9435-25/07010(AAD), 25 ft, 3/8 in ID, Industrial Interchange Fittings, High Pressure, 7000005374, 1 EA/Case
3M™ 07011, Supplied Air Respirator Hose W-9435-50/07011(AAD), 7000005373, 1 EA/Case
Dynabrade 40610 Electric Dynafile II Abrasive Belt Tool
3M 16205, PPS Disposable Lids, Midi, 125 Micron Full Diameter Filters, 7000120049
3M™ 17323, Versaflo™ Respiratory Helmet Assembly M-407, with Premium Visor and Flame Resistant Shroud, 7000002395, 1 EA/Case
3M 69061, Trizact Cloth Belt 307EA, A16 JE-weight, 2 in x 72 in, Film-lok, Full-flex, 7010328662, 50 per case
3M 02590, Stikit Gold Sheet Roll, P400, 2-3/4 in x 45 yd, 7000028254
3M 76783, Cubitron II Hookit Cloth Disc 784F, 120+ XF-weight, 5 in x NH, Die 500X, 7100222757
Dynabrade 15420 Dynafile III Abrasive Belt Tool
3M 05027, Cloth Belt 384F, 240+ XF-weight, 1/2 in x 12 in, Fabri-lok, 7100141448, 200 per case
3M 22404, Roloc Disc 361F, 80 YF-weight, TR, 3 in, Die R300V, 7000045100
3M 05508, Marine Adhesive Sealant 4000 UV, White, 600 mL Sausage Pack, 7010330455, 12/Case
3M 20910, PSA Cloth Disc 348D, 60 X-weight, 2 in x NH, Die 200P, 7000118872
3M 05526, Wetordry Sponge Pad 20, 5-1/2 x 2-3/4 in x 3/8 in, 7000045663
3M™ 72016, Remote Alarm & Strobe 529-05-20, Audible, 7000131708, 1 EA/Case
3M™ 72787, Calibration Kit 529-04-48, Large, 7000052154, 1 EA/Case
3M 29611, 641WY 1/4" X 24", 100 Mesh Diamond Cloth Belt, 7010534832
Dynabrade 59339 Vacuum Cuff, 1", w/Groove
3M™ 72010, Replacement Filter Kit 523-01-29, 7000056891, 1 EA/Case
Dynabrade 90872 2" Dia. Coarse NWN DynaBrite Locking-Type Disc, 25/pack
Dynabrade 94992 1/4" Male Composite-Style Coupler with 1/4" Male Plug Assembly
3M™ 72122, Portable Compressed Air Filter and Regulator Panel 256-02-01, 100 cfm, 8 outlets, with Carbon Monoxide Monitor, 7000052147, 1 EA/Case
3M 62605, Scotch-Weld Threadlocker TL42, Blue, 10 mL Bottle, 7100039190, 10/case
Dynabrade 95544 Gear Grease, 2.5oz. Tube
Standard Abrasives 725001, Buff and Blend Cross Buff GP, A/O Medium, 1-1/2 in x 1/2 in x 3 Ply x 8-32, 7010330368
3M™ 72013, Adapter 529-04-50, 110-120 VAC, 7000131705, 1 EA/Case
3M 13372, Scotch-Brite Star, 3 in A CRS LS, 7000120967
3M 08300, Ultrapro Autobody Sealant, Tan, 1/10 gal Cartidge, 7000000946, 12 per case
3M 71878, Flexible Diamond Hand File 6210J, Yellow 18, N40, NO 1, 7000082156, 10 per case
3M 08302, Ultrapro Autobody Sealant, Clear, 5 oz Tube, 7000120449, 6 per case
3M 19768, Utility Cloth Sheet 314D, 9 in x 11 in P180 J-weight, 7000000356
3M 35519, Rubber Sanding Block, 2-3/4 in x 5 in, 7000126109
3M 05044, Cloth Belt 384F, 80+ XF-weight, 1/2 in x 18 in, Fabri-lok, Full-flex, 7100141434, 200 per case
Standard Abrasives 704491, Cartridge Roll Mandrel, 3/16 in x 3/4 in x 1/4 in x 1 in x 2-3/4 in CM-15, 7000121768
3M 30289, Trizact Hookit Finishing Foam Sheet, 5000, 2-3/4 in x 5-1/2 in, 7000120135, 15 Sheets/Carton 
