Label tape Brady M21-250-423, thermal transfer polyester, black on white, 6.35 mm x 6.4 m

Brady M21-250-423 is a thermal transfer polyester label tape with black print on a white background. The tape measures 6.35 mm in height and 6.4 m in length, and is manufactured from permanent polyester for long-lasting adhesion. It is designed to create durable, high-contrast labels that resist chemicals and abrasion, making it suitable for cable marking, panel identification and equipment labelling in industrial and commercial environments.

Advantages

This polyester label tape produced for thermal transfer printing delivers high-contrast, legible text and symbols with strong resistance to rubbing and common chemicals. Its permanent adhesive ensures stable attachment to a range of surfaces including cables, plastic panels and metal equipment. The 6.35 mm width is suitable for compact labels while the 6.4 m length provides multiple labels per roll, reducing the need for frequent replacements.

Suitable for

Key specifications

How to use

Install the tape roll into a compatible thermal transfer Brady labeller following the device manufacturer’s instructions. Use appropriate thermal transfer ribbons and printer settings for polyester media to achieve optimal print contrast and durability. After printing, apply labels to clean, dry surfaces, pressing firmly to ensure full adhesive contact. Allow time for the adhesive to set before exposing labels to heavy abrasion or aggressive chemicals.

Recommendations

For best results use a thermal transfer ribbon recommended for polyester labels and clean surfaces with a suitable solvent before application. Store unused rolls in a cool, dry place away from direct sunlight to preserve adhesive performance and print quality.