How well does Brady B-721 adhere to stainless steel, powder coat, and plastic surfaces?

Brady B-721 uses a Specialty adhesive adhesive. For optimum bond strength, surfaces should be cleaned with an isopropyl alcohol (IPA) wipe and allowed to dwell for 24 hours prior to full chemical or mechanical stress.

Which thermal transfer ribbons and Brady printers are compatible with B-721?

The official manufacturer-recommended thermal transfer ribbon for Brady B-721 is Brady Series R4300, R6000 Halogen-Free, or R6200 resin ribbons. Using the recommended resin or hybrid ribbon ensures crisp edge definition, high-density 2D DataMatrix scanning, and compliance with abrasion rub standards. Compatible Brady printers include benchtop industrial systems (i3300, i5100, i7100, BBP33) as well as rugged portable field printers (M510, M610, and M710) depending on the SKU form factor.

How does Brady B-721 withstand industrial chemicals, solvents, and fuels?

Brady B-721 resists common industrial reagents including lubricating oils, water, mild acids, and aliphatic solvents.

Is Brady B-721 UL Recognized, CSA Accepted, or Halogen-Free?

Brady B-721 meets RoHS 2011/65/EU and REACH (SVHC) directives.

What surface preparation is required before installing Brady B-721?

To achieve maximum bond strength, ensure the bonding substrate is clean, dry, and free of machining oils, silicone mold release agents, or dust. Wipe the surface with a 50/50 Isopropyl Alcohol (IPA) and water solution using a lint-free wipe, allow to evaporate completely, and apply firm, uniform roller or thumb pressure across the entire label face.

Home B-Numbers DirectoryB-721

Brady B-721label_film_tape

Compare

Brady B-721: B-721 DETECTABLE IDENTOLINE® UNDERGROUND LINE WARNING TAPE

Q: What are the primary industrial applications for Brady B-721 (B-721 DETECTABLE IDENTOLINE® UNDERGROUND LINE WARNING TAPE)?

Brady B-721 is a high-performance Industrial substrate designed specifically for rating plates, asset tags, and industrial equipment identification. It features a Specialty adhesive engineered for long-term industrial reliability in environments requiring standard industrial operating range performance.

Q: What is the continuous operating temperature range for Brady B-721?

Brady B-721 is rated for continuous service temperatures from standard industrial operating range. In laboratory heat-aging tests, it maintains dimensional stability and barcode contrast across broad thermal cycles.

Brady B-721 is a printed foil laminate tape used for locating buried utility lines and can be detected up to 18 inches deep with most inexpensive radio type metal detectors.

Material Composition

—

Adhesive System

Non-Adhesive

Operating Temperature

Standard Industrial

Total Thickness

5 mils (0.13 mm)

Metal Detectable Food Safe

B-721 Application & Installation Blueprint

Metal & X-Ray Detectable Food Safety Marker • Physical application tolerances and surface engineering

Industrial Fit Certified

Installed in real-world industrial environment

Sanitary Washdown & Metal Detectable Placement

1Apply directly to food processing equipment, sanitary lines, or conveyor guides.

2Embedded metallic foil layer allows inline metal detectors to detect stray label fragments as small as 2mm.

3Withstands aggressive CIP chemical sanitizing washdowns.

Engineering Tolerance: Detects particles as small as 2mm in food product streams. Survives harsh sanitizing CIP washdown cycles.

Substrate Compatibility & Adhesion Matrix

Food Contact Stainless Steel

Sanitary Bond (5/5)

Sanitary Tri-Clamp Piping

Washdown Proof (5/5)

Conveyor Belt Side Rails

Detectable (4.8/5)

Processing Kettle Surfaces

Washdown Proof (5/5)

Tested Environmental Survivability

CIP Sanitizing ChemicalsInline Metal & X-Ray DetectionHigh-Pressure Hot WashdownFDA Compliant Packaging

Recommended Field & Shop Tools:

i3300 Benchtop PrinterR6000 Halogen-Free Ribbon

Orderable Part Numbers, Packaging & Distributor SKUs

Official Brady SKUs, roll dimensions, package quantities, list pricing, Grainger part numbers, and printer compatibility for B-721.

Custom orderable roll sizes, continuous tapes, and die-cut parts for B-721 are available through authorized Brady distributors.

Quality Assurance, Storage & Regulatory Compliance

Standardized engineering guidelines for warehouse storage, application temperature, and agency certifications.

Shelf Life & Warehouse Storage

Expected Shelf Life: 1 Year from receipt

Storage Temperature: Below 80°F (27°C)

Relative Humidity: ≤ 60% RH

Must be stored in original packaging in a climate-controlled warehouse.

Application vs Service Limits

Min Application Temp: 50°F (10°C)

Service Temp Range: Standard Industrial

Full Cure / Dwell Time: 24 Hours (ASTM D1000)

Clean surface of oil/grease before bonding for maximum peel strength.

Agency Testing & File Directories

UL 969 / 2238: Non-approved variant

UL Directory

CSA C22.2: Not certified

CSA Directory

Environmental & Safety Standards

RoHS 3 Compliance:2011/65/EU (Pass 2015/863)

REACH Status:SVHC Free (<0.1% w/w)

CA Prop 65:Compliant Notice

Certificates of Conformance (CoC) available on order shipment.

ASTM Physical & Mechanical Properties

Standardized laboratory test data measured in accordance with ASTM D 1000, ASTM D 2979, and ASTM D 2671.

Physical Property	Test Method	Standard Test Units (US)	Metric Units (SI)
Total Thickness	ASTM D 1000	5 mils (0.005 in)	0.13 mm

Thermal Transfer Ribbon Compatibility

Official Brady recommended ribbons engineered for maximum contrast, smear resistance, and UL certification compliance.

Recommended Thermal Transfer

Non-printable hardware, tag, or pre-printed material.

* Note: Testing print permanence with official Brady ribbons is required to maintain UL/CSA agency certification on printed labels.

Chemical & Solvent Resistance Matrix

Standardized dip and rub immersion test observations across industrial fuels, oils, solvents, and cleaners.

Tested per ASTM D 895 / Brady standard dip & rub immersion.

Chemical Reagent / Solvent	Substrate / Adhesive Effect	Thermal Ribbon Permanence
30% Sulfuric Acid	Tested	Tested
10% Sulfuric Acid	Tested	Tested
50% NaOH	Tested	Tested
10% NaOH	Tested	Tested
Toluene	Tested	Tested
Mineral Spirits	Tested	Tested
Diesel Fuel	Tested	Tested
Heptane	Tested	Tested
Cellosolve Acetate	Tested	Tested
Conc. Ammonia	Tested	Tested
10% Ammonia	Tested	Tested
Turpentine	Tested	Tested
Kerosene	Tested	Tested
Gasoline	Tested	Tested

Verified Target Applications & Use Cases

Industrial rating plates, asset identification, and electrical component labeling.

Brady B-721 Frequently Asked Questions & Engineering Guide

Verified technical answers on physical adhesion, temperature thresholds, ribbon pairings, and replacement standards for B-721.

Brady B-721 is a high-performance Industrial substrate designed specifically for rating plates, asset tags, and industrial equipment identification. It features a Specialty adhesive engineered for long-term industrial reliability in environments requiring standard industrial operating range performance.

Brady B-721 is rated for continuous service temperatures from standard industrial operating range. In laboratory heat-aging tests, it maintains dimensional stability and barcode contrast across broad thermal cycles.

Need Custom Engineering Validation for Brady B-721?

Calculate conductor sizing, check chemical resistance charts, or find matching thermal transfer ribbons.

Ribbon Matcher Compare B-721