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™ 07011, Supplied Air Respirator Hose W-9435-50/07011(AAD), 7000005373, 1 EA/Case
Dynabrade 10295 Screen
3M 26120, PPS Series 2.0 Adapter, Type S28, 17.5 mm Female, 19 TPI
Thread, 7100135956
3M™ 72013, Adapter 529-04-50, 110-120 VAC, 7000131705, 1 EA/Case
3M™ 72016, Remote Alarm & Strobe 529-05-20, Audible, 7000131708, 1 EA/Case
3M 24049, Wetordry Cloth Disc 281W, P1000 YF-weight, 8 in x NH, Die 800JM, 7000045052
ACS Diamond Cloth Belt, CX1250 1/4" X 24" 75U
Dynabrade 40610 Electric Dynafile II Abrasive Belt Tool
ACS CX1250 Diamond Belt, 1/2" X 24" 30u
3M 08019, Marine Grade Silicone Sealant, Clear, 3 oz Tube, 7000120480, 6/Case
Dynabrade 53270 7" (180 mm) Dia. Right-Angle Disc Sander
Air Turbine Tools 310RDM - 6mm Router Hand Tool Series, 25,000RPM, 33423
3M 76625, Roloc Disc 777F, 80 YF-weight, TR, 1 in, Die R100N, 7000045621
Dynabrade 64404 36" W x 60" L (914 mm W x 1,524 mm L) Metal Capture Downdraft Table, 230 V (AC), Side Exhaust
Dynabrade 51332 .7 hp Router, 3-1/2" Base, Central Vacuum, 20,000 RPM, 1/4 Collet
Dynabrade 51632 .1 hp Straight-Line Pencil Grinder, Central Vacuum, 1/8" Collet
3M 03999 Scotch-Brite Surface Conditioning Belt, SC-BS, A/O Medium, 2 in x 132 in, 7010309300
3M 26109, PPS Series 2.0 Adapter, Type S23, 1/4 Female, 18 Thread NPS, 7100135941
Air Turbine Tools 310RSV - 6mm Router Hand Tool Series, 25,000RPM, 33421
3M 80510, Roloc Disc 777F, P120 YF-weight, TR, 1 in, Die R100N, 7000045622
3M 88904, PSA Cloth Disc 348D, 50 X-weight, 12 in x NH, Die 1200B, 7000118897
Dynabrade 51330 .7 hp Router, Front Exhaust, 20,000 RPM, 3/8"-24 Spindle
Dynabrade 51862 .4 hp Trim Router (Complete), 30,000 RPM, 1/4 Collet
3M 16067, PPS Mix Ratio Insert - Generic, 3 oz, 7000119840, 10 Inserts Per Pack
Norton 66261014793 - 3" Medium Grade Aluminum Oxide Bear-Tex Speed-Lok High Strength Maroon TR Non-Woven Abrasive Disc, 80 Each
3M 29844, Sanding Screen, 120 Grit, 16 in x NH, 7100160823
3M 05182, Scotch-Brite Cut and Polish Wheel, CP-WL, 5A Fine, 6 in x 1/2 in x 1 in, 7100050403,Box of 4
3M™ 72010, Replacement Filter Kit 523-01-29, 7000056891, 1 EA/Case
3M 26054, PPS Series 2.0 Adapter, Type S18, 3/8 Female, 18 Thread NPS,
4 per case
3M 53914, Performance Plus Duct Tape 8979N Nuclear Red, 48 mm x 54.8 m 12.1 mil, 7000049014, 24/ case
Dynabrade 94993 1/4" Male Composite-Style Coupler with 1/4" Female Plug Assembly
Norton 66261014897 2" x 1/4" Bear-Tex NEX Rapid Blend AO Medium Grit TR (Type III) Non-Woven Wheel, 60 Each
Dynabrade 11476 Dynabelter Abrasive Belt Tool, Heavy-Duty
Dynabrade 51706 .1 hp Straight-Line Pencil Grinder, Rear Exhaust, 35,000 RPM, 1/8" Collet
3M 81451, Scotch-Weld Structural Plastic Adhesive DP8010NS, Blue, 45 mLDuo-Pak, 7100036721, 12/case
Dynabrade 64350 26" W x 36" L (660 mm W x 914 mm L) Metal Capture Downdraft Station, 230 V (AC)
Dynabrade 97567 1/4" Safety Coupler, Male
3M 22405, Roloc Disc 361F, P100 YF-weight, TR, 3 in, Die R300V, 7000045102
3M 71358, 641WY 1/4" X 24", 600 Mesh Diamond Cloth Belt, 7010534894 
