3M 7000123384 Fine Line Masking Tape 1 in X 60 Yd Blue

Product Description

The 3M 7000123384 is a blue, film-backed fine line masking tape designed to produce clean, sharp paint lines on contoured and irregular surfaces. Sold as a 1-inch wide by 60-yard roll at 4.8 mil total thickness, it is built for automotive refinishing, industrial coating, and multi-coat paint work where edge definition is critical. The low-profile film backing conforms tightly to curves and depressed areas, resisting lifting at corners. Adhesion to steel is rated at 42 oz per inch of width, and the tape withstands temperatures up to 250 degrees F during paint cure cycles.

This tape is suited for professional painters and auto body technicians working on highly contoured body panels, complex trim lines, and surfaces with existing cured acrylic lacquer, enamel, or polyurethane finishes. The smooth, thin film backing allows clean taping directly over freshly cured topcoats without disturbing the underlying finish. It is intended for controlled indoor environments and should not be used in outdoor or prolonged UV-exposure applications.

Key Features

• 4.8 mil total thickness delivers a low-profile edge for sharp color line separation
• Conforms to highly contoured and irregular surfaces without lifting at corners or in recessed areas
• Rated for use up to 250 degrees F, suitable for paint oven and forced-cure conditions
• Adhesion to steel: 42 oz per inch width for secure hold without bleed-through
• Tensile strength of 10 lbs per inch width with 830 percent elongation at break for flexible handling
• Compatible with acrylic lacquer, enamel, and polyurethane finishes

Compatibility

Designed for use over freshly cured acrylic lacquer, enamel, and polyurethane paint systems in automotive and industrial refinishing applications. Not rated for outdoor use.

Installation Notes

Applied by automotive painters and industrial coating technicians. Ensure the substrate surface is fully cured and clean before application. Remove the tape promptly after the paint flash or cure cycle is complete to prevent adhesive transfer. Do not use on uncured or water-based coatings that have not fully dried unless confirmed compatible with film-backed tapes.

Technical Specifications

• Width: 1 inch
• Length: 60 yards per roll
• Thickness: 4.8 mil
• Adhesion to Steel: 42 oz per inch width
• Tensile Strength: 10 lbs per inch width
• Elongation at Break: 830 percent
• Maximum Use Temperature: 250 degrees F
• Color: Blue
• Backing Material: Film
• Weight: 0.4 pounds
• UOM: Roll
• UPC: 00021200608339

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7000123384