---
product_id: 19496379
title: "Brady Authentic (M21-500-423) Harsh Environment Polyester Label for Barcode, Solar Panel, and Printed Circuit Board Labeling, BlackonWhite-For M210, M210-LAB, M211, BMP21-PLUS and BMP21-LAB, .5\"W 21'L"
brand: "brady"
price: "HK$446"
currency: HKD
in_stock: true
reviews_count: 8
url: https://www.desertcart.hk/products/19496379-brady-authentic-m21-500-423-harsh-environment-polyester-label-barcode
store_origin: HK
region: Hong Kong
---

# UV & extreme temperature resistant High-tack permanent adhesive UL & CSA certified durability Brady Authentic (M21-500-423) Harsh Environment Polyester Label for Barcode, Solar Panel, and Printed Circuit Board Labeling, BlackonWhite-For M210, M210-LAB, M211, BMP21-PLUS and BMP21-LAB, .5"W 21'L

**Brand:** brady
**Price:** HK$446
**Availability:** ✅ In Stock

## Summary

> 🛠️ Label Like a Pro, Last Like a Legend

## Quick Answers

- **What is this?** Brady Authentic (M21-500-423) Harsh Environment Polyester Label for Barcode, Solar Panel, and Printed Circuit Board Labeling, BlackonWhite-For M210, M210-LAB, M211, BMP21-PLUS and BMP21-LAB, .5"W 21'L by brady
- **How much does it cost?** HK$446 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hk](https://www.desertcart.hk/products/19496379-brady-authentic-m21-500-423-harsh-environment-polyester-label-barcode)

## Best For

- brady enthusiasts

## Why This Product

- Trusted brady brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Compact Yet Long-Lasting:** 0.5" width with 21' length—plenty of labels for all your professional needs.
- • **Permanent Adhesion Across Surfaces:** High-tack adhesive ensures labels stay put on any material, rain or shine.
- • **Certified Reliability You Can Trust:** UL Recognized and RoHS compliant for guaranteed safety and performance.
- • **Precision Labeling for Critical Assets:** Ideal for barcodes, solar panels, and PCBs—keep your tech flawlessly identified.
- • **Unmatched Durability for Harsh Environments:** Engineered to withstand UV, fuel, oil, and extreme temps—your gear’s toughest label.

## Overview

The Brady Authentic M21-500-423 polyester label is engineered for harsh environments, featuring a high-tack permanent adhesive and resistance to UV light, extreme temperatures, abrasions, and chemicals. Certified to UL969 and CSA standards, it’s perfect for durable barcode, solar panel, and PCB labeling with a compact 0.5" width and 21-foot length.

## Description

Harsh environment applications require tough materials and Brady’s B-423 polyester stands up to the challenge. Designed to handle the rigors of renewable energy applications, this material is ideal for a wide variety of difficult surfaces in an array of environmental conditions.

## Features

- Harsh Environment – High-tack permanent adhesive for a variety of surface types in all-weather applications
- Engineered Performance – Resists exposure to UV light, extreme temperatures, abrasions, fuel and oil, degreasers, cleaners, and detergents
- Certifications – UL Recognized to UL969, CSA to C22.2 No. 0.15-95, RoHS compliant to 2011/65/EU (Pass 2015/863), DIN VDE 0472 Part 815
- For material specific performance and properties, please refer to the Technical Data Sheet (TDS)

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Brady |
| Brand | Brady |
| Item Weight | 2.4 ounces |
| Product Dimensions | 2.09 x 1.14 x 0.75 inches |
| Item model number | M21-500-423 |
| Is Discontinued By Manufacturer | No |
| Color | Black on White |
| Shape | Rectangular |
| Material Type | Polyester |
| Number of Items | 1 |
| Size | .5" |
| Line Size | 0.5 inches |
| Ink Color | White |
| Manufacturer Part Number | M21-500-423 |

## Product Details

- **Color:** Black on White
- **Size:** .5"
- **Material:** Polyester
- **Brand:** Brady
- **Finish Type:** Gloss

## Images

![Brady Authentic (M21-500-423) Harsh Environment Polyester Label for Barcode, Solar Panel, and Printed Circuit Board Labeling, BlackonWhite-For M210, M210-LAB, M211, BMP21-PLUS and BMP21-LAB, .5"W 21'L - Image 1](https://m.media-amazon.com/images/I/61QWtC5m3ZL.jpg)
![Brady Authentic (M21-500-423) Harsh Environment Polyester Label for Barcode, Solar Panel, and Printed Circuit Board Labeling, BlackonWhite-For M210, M210-LAB, M211, BMP21-PLUS and BMP21-LAB, .5"W 21'L - Image 2](https://m.media-amazon.com/images/I/31M2r013BRL.jpg)
![Brady Authentic (M21-500-423) Harsh Environment Polyester Label for Barcode, Solar Panel, and Printed Circuit Board Labeling, BlackonWhite-For M210, M210-LAB, M211, BMP21-PLUS and BMP21-LAB, .5"W 21'L - Image 3](https://m.media-amazon.com/images/I/51L6qzDXxpL.jpg)
![Brady Authentic (M21-500-423) Harsh Environment Polyester Label for Barcode, Solar Panel, and Printed Circuit Board Labeling, BlackonWhite-For M210, M210-LAB, M211, BMP21-PLUS and BMP21-LAB, .5"W 21'L - Image 4](https://m.media-amazon.com/images/I/71a3gInTSrL.jpg)
![Brady Authentic (M21-500-423) Harsh Environment Polyester Label for Barcode, Solar Panel, and Printed Circuit Board Labeling, BlackonWhite-For M210, M210-LAB, M211, BMP21-PLUS and BMP21-LAB, .5"W 21'L - Image 5](https://m.media-amazon.com/images/I/71XRvDWDnAL.jpg)

## Available Options

This product comes in different **Color, Size, Style** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Perfect
*by K***R on November 7, 2024*

Works great, from brand

### ⭐⭐⭐⭐⭐ Value
*by A***R on June 12, 2021*

Fits perfect. no problems with any labels so far.

### ⭐⭐⭐⭐⭐ Five Stars
*by J***. on January 21, 2017*

Great product, worked well.Excellent seller. Fast shipping. Item as advertised. I would do business with them again.

## Frequently Bought Together

- Brady Authentic (M21-500-423) Harsh Environment Polyester Label for Barcode, Solar Panel, and Printed Circuit Board Labeling, BlackonWhite-For M210, M210-LAB, M211, BMP21-PLUS and BMP21-LAB, .5"W 21'L
- Brady Authentic (M21-500-595-WT) All-Weather Vinyl Label for Indoor/Outdoor ID, Lab and Equipment Labeling, Black on White- For M210, M210-LAB, M211, BMP21-PLUS and BMP21-LAB Printers, .5" W 21' L
- Brady Authentic (M21-750-499) Multi-Purpose Nylon Label for General ID, Wire Marking, and Lab, Black on White- Designed for M210, M210-LAB, M211, BMP21-PLUS and BMP21-LAB Printers, .75" W 16' L

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**Shop now:** [https://www.desertcart.hk/products/19496379-brady-authentic-m21-500-423-harsh-environment-polyester-label-barcode](https://www.desertcart.hk/products/19496379-brady-authentic-m21-500-423-harsh-environment-polyester-label-barcode)

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*Product available on Desertcart Hong Kong*
*Store origin: HK*
*Last updated: 2026-02-20*