Professional-grade anodization masking tape featuring 5x faster application than liquid masking, non-silicone formulation, and purple transparent design for precision positioning in chromic acid baths.
3M™ Anodization Masking Tape 8985L is a specialized non-silicone masking solution engineered specifically for Type I chromic acid anodization baths. This transparent purple tape features a polyester backing with rubber adhesive, designed to deliver superior performance in demanding anodization processes. The tape provides sharp masking lines, minimizes leaking, and reduces the need for part rework, making it an ideal choice for aerospace components, precision machine components, and welded assemblies.
This innovative masking tape masks and de-masks up to 5x faster than traditional liquid masking, with no cure time required. The non-silicone formulation helps reduce post-process coating and bonding failures, ensuring compatibility with downstream processes such as bonding or paint adhesion. Each case contains 24 rolls, making it economical for high-volume industrial operations. The transparent purple color with printed backing provides excellent visibility for accurate positioning and easy identification during application.
The 3M Anodization Masking Tape 8985L can replace complex, messy liquid masking and associated unpleasant odors, offering significant labor savings of up to 60% compared to traditional masking methods. The film liner provides added stability for easy die-cutting, and the tape can be used with or without chemical film on a variety of aluminum and other metal alloys. For industrial and occupational use only, this product represents a reliable investment in manufacturing efficiency and quality.
Key Features
- Designed specifically for Type I chromic acid anodization baths
- Masks and de-masks up to 5x faster than liquid masking with no cure time
- Transparent purple color for fast and accurate positioning
- Non-silicone rubber adhesive minimizes coating and bonding failures
- Sharp masking lines reduce leaking and part rework requirements
- Polyester backing with film liner for easy die-cutting
- Up to 60% labor time savings compared to traditional masking methods
- Compatible with or without chemical film on aluminum and metal alloys
- Clean, one-piece removal for efficient workflow
- Ideal for aerospace, precision machine components, and welded assemblies
Technical Specifications
| Specification |
Value |
| Product Number | 8985L |
| Part Number | 8985L |
| UPC Code | 00638060403785 |
| 3M ID | 7100207277 |
| Product Type | Masking Tape |
| Color | Purple |
| Backing Material | Polyester |
| Adhesive Type | Rubber |
| Overall Width (Imperial) | 2 inches |
| Overall Width (Metric) | 50.8 millimeters |
| Overall Length (Imperial) | 72 yards |
| Overall Length (Metric) | 65.8 meters |
| Total Tape Thickness (Imperial) | 3.9 mils |
| Backing Thickness (Imperial) | 3 mils |
| Backing Thickness (Metric) | 0.076 millimeters |
| Core Size (Imperial) | 3 inches |
| Core Size (Metric) | 7.6 centimeters |
| Maximum Operating Temperature | 93°C (199°F) |
| Number of Adhesive Sides | Single-sided |
| Units per Case | 24 rolls |
| Smallest Saleable Unit | Roll |
| Clean Removal | Yes |
| Silicone Content | Non-silicone formulation |
| Liner Type | Film liner for easy die-cutting |
| Brand | 3M™ |
| Series | 8985L |
| Anodization Type | Type I (Chromic Acid) |
| Industries | Automotive, General Industrial, MRO, Military & Government, Specialty Vehicles, Transportation |
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