Anodization Masking Tape

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200°F
In Stock

Anodization Masking Tape

Series: 3M 8985L

Non-silicone purple tape for Type 1 chromic acid anodizing (200°F)

MADE IN THEU.S.A.

Purple tape for masking in Type 1 chromic anodizing

3M Anodization Masking Tape 8985L is a reliable non-silicone solution for Type I (chromic acid) anodization. Designed for performance, it is specifically resistant to chromic acid and provides sharp lines with a rubber adhesive for easy removal. This tape can mask and de-mask up to 5x faster* than labor-intensive liquid masking for improved productivity.

Max Temp

200 °F

Material

polyester

Color

purple

Adhesive

rubber

More About This Product

This 8985L purple anodizing tape can be customized - Viadon can either slit this tape to the exact width you need (1" or wider) or have it made into stock or custom die cut shapes. Have a plotter? We can slit it to an appropriate width for your machine so you can cut customized die cuts in-house, as-needed.

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.

Standard Widths (10 options)

Popular Sizes

Custom sizes available: Contact us if you do not see the width you need. All tapes are slit to width at time of order and cannot be returned for refund or credit.

Technical Specifications

Physical Properties

Carrier3 mils printed polyester film
Adhesive0.9 mil rubber
Total tape thickness3.9 mils
Liner thickness2 mils

Performance

Temperature RangeUp to 200°F
ApplicationChromic acid (Type I) anodization baths
Shelf Life12 months from date of manufacture
Removal propertiesNo residue

Downloads

Application Tips

Apply Pressure
Push down hard — pressure-sensitive adhesive requires firm pressure.
Timing
Apply masking 24 hours before anodizing for optimal results.
Clean & Dry
Clean parts thoroughly before tape application. Apply to dry surfaces only.
Storage
Store rolls upright in cool, dry environment.

All tapes are slit to width at time of order and cannot be returned for refund or credit.

Custom Solutions

Don't see what you need?

Please contact our experienced staff for assistance. We respond promptly to emails and phone calls.

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