Name: Anodization Masking Tape
Brand: 3M
Availability: InStock

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 (11 options)

Popular Sizes

Part #	Width (in.)	Length (yds)	Rolls/Case	Price/Roll
3M-8985L-3/4x72	0.750	72	48	$23.40
3M-8985L-1x72	1	72	48	$31.20
3M-8985L-2x72	2	72	24	$62.40
3M-8985L-3x72	3	72	16	$93.60
3M-8985L-4x72	4	72	12	$124.80
3M-8985L-6x72	6	72	8	$187.20
3M-8985L-8x72	8	72	6	$249.60
3M-8985L-12x72	12	72	4	$374.40
3M-8985L-16x72	16	72	3	$499.20
3M-8985L-24x72	24	72	2	$748.80
3M-8985L-48x72	48	72	1	$1497.60

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

3M 8985L Tape Series, Technical Data Sheet for download

PDF · 93 KB

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.

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.

Anodization Masking Tape

Purple tape for masking in Type 1 chromic anodizing

More About This Product

Standard Widths (11 options)

Technical Specifications

Physical Properties

Performance

Downloads

Application Tips

Don't see what you need?

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