How well does Brady B-7641 adhere to stainless steel, powder coat, and plastic surfaces?

Brady B-7641 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-7641?

The official manufacturer-recommended thermal transfer ribbon for Brady B-7641 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-7641 withstand industrial chemicals, solvents, and fuels?

Brady B-7641 resists common industrial reagents including lubricating oils, water, mild acids, and aliphatic solvents.

Is Brady B-7641 UL Recognized, CSA Accepted, or Halogen-Free?

Brady B-7641 meets RoHS 2011/65/EU and REACH (SVHC) directives.

What surface preparation is required before installing Brady B-7641?

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-7641

Brady B-7641wire_heat_shrink_sleeve398 Orderable SKUs

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Brady B-7641: PermaSleeve TM Marker

Q: What are the primary industrial applications for Brady B-7641 (PermaSleeve TM Marker)?

Brady B-7641 is a high-performance Heatshrinktubing(2:1),lowsmokezerohalogen,flameretardant,polyolefinsleeves 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 -55°C to 105°C (-67°F to 221°F) performance.

Q: What is the continuous operating temperature range for Brady B-7641?

Brady B-7641 is rated for continuous service temperatures from -55°C to 105°C (-67°F to 221°F). In laboratory heat-aging tests, it maintains dimensional stability and barcode contrast across broad thermal cycles.

B-7641 PermaSleeve TM Markers are low smoke zero halogen heatshrink tubing designed for wire identification and insulation purposes.

Material Composition

Heatshrinktubing(2:1),lowsmokezerohalogen,flameretardant,polyolefinsleeves

Adhesive System

Non-Adhesive

Operating Temperature

-55°C to 105°C (-67°F to 221°F)

Total Thickness

—

Brady B-7641 PermaSleeve TM Marker industrial application photography

Figure 1: Brady B-7641 — Low-Smoke Zero-Halogen Wire Marker Tags for mass transit and naval vesselsField Application Photo

Heat-Shrink Wire Sleeve

B-7641 Application & Installation Blueprint

PermaSleeve® Heat-Shrink Wire Tubing • Physical application tolerances and surface engineering

Industrial Fit Certified

B-7641 real-world industrial application

Installed in real-world industrial environment

3:1 Heat-Shrink Sleeve Recovery Procedure

1Slide the unrecovered tubular sleeve over the wire lead prior to connector crimping.

2Position sleeve at the desired marker distance from the terminal pin.

3Apply focused hot air at 250°F (120°C) with an industrial heat gun until polyolefin shrinks snugly around wire.

Engineering Tolerance: 3:1 Shrink Ratio recovers down to 33% of expanded diameter. Meets SAE-AS-81531 and MIL-STD-202.

Substrate Compatibility & Adhesion Matrix

Mil-Spec Aircraft Wire (M22759)

Engineered Fit (5/5)

Cross-Linked Polyethylene (XLPE)

Engineered Fit (5/5)

Kapton & Tefzel Wire Bundles

Engineered Fit (5/5)

Automotive Primary Wire

Engineered Fit (5/5)

Tested Environmental Survivability

SAE-AS-81531 Mil-Spec RubMIL-STD-202 Method 215KAviation Fuel & DieselHigh Vibration & Flexing

Recommended Field & Shop Tools:

Industrial Heat Gun with Reflector Nozzlei7100 / BBP72 Double-Sided PrinterM610 Portable Tool

Orderable Part Numbers, Packaging & Distributor SKUs

Official Brady SKUs, roll dimensions, package quantities, list pricing, Grainger part numbers, and printer compatibility for B-7641.

Popular B-7641 Formats

Standard industrial rolls and die-cut sizes with unit cost breakdown

#1 Popular Choice

Standard Part

LSZH-C-250-WT

0.439 in H x 0.25 in Dia x 75 ft L

Roll of 75 Feet

Roll / Pack Total:$128.99 USD

Normalized Unit Cost:$1.72/ft

Supported Hardware:

BBP72i7100i7500+1

Grainger

#2 Standard Format

Standard Part

2LSZH-187-2-YL-2

0.335 in H x 1 in W x 0.187 in Dia

Roll of 5000 Each

Roll / Pack Total:$2459.00 USD

Supported Hardware:

BBP11BBP12BBP72+4

#3 High Capacity

Standard Part

LSZH-125-2-YL-2

0.235 in H x 1 in W x 0.125 in Dia

Roll of 5000 Each

Roll / Pack Total:$1849.00 USD

Supported Hardware:

BBP11BBP12BBP72+5

All 398 Orderable Part Numbers

Pricing: $64.99 – $3419.00 USD

Catalog SKU	Dimensions	Packaging / Qty	List Price & Unit Cost	Order MOQ	Compatible Printers
LSZH-C-250-WTPopular UPC: 662820997993	0.439 in H x 0.25 in Dia x 75 ft L	Roll of 75 Feet	$128.99 USD $1.72/ft ($0.14/in)	1 ROL Standard Order	BBP72i7100+2
2LSZH-187-2-YL-2Popular UPC: 754473942472	0.335 in H x 1 in W x 0.187 in Dia	Roll of 5000 Each	$2459.00 USD	1 ROL Standard Order	BBP11BBP12+5
LSZH-125-2-YL-2Popular UPC: 754473943431	0.235 in H x 1 in W x 0.125 in Dia	Roll of 5000 Each	$1849.00 USD	1 ROL Standard Order	BBP11BBP12+6
LSZH-C-250-WT-JPopular UPC: 662820998099	0.439 in H x 0.25 in Dia x 175 ft L	Roll of 175 Feet	$343.99 USD $1.97/ft ($0.16/in)	1 ROL Standard Order	BBP72i7100+1
2LSZH-187-2-WTPopular UPC: 754473942410	0.335 in H x 2 in W x 0.187 in Dia	Roll of 2500 Each	$2459.00 USD	1 ROL Standard Order	BBP11BBP12+6
LSZH-C-250-WT-KPopular UPC: 888434667279	0.439 in H x 0.25 in Dia x 360 ft L	Roll of 360 Feet	$828.99 USD $2.30/ft ($0.19/in)	1 ROL Standard Order	BBP72i7100+2
M4C-187-7641Popular UPC: 888434593783	0.335 in H x 0.187 in Dia x 5.5 ft L	Cartridge of 66 Inches	$72.99 USD $13.27/ft ($1.11/in)	1 CTR Standard Order	M410M510+1
2LSZH-125-2-WTPopular UPC: 754473942274	0.235 in H x 2 in W x 0.125 in Dia	Roll of 2500 Each	$1879.00 USD	1 ROL Standard Order	BBP11BBP12+6
M4C-250-7641Popular UPC: 888434593806	0.439 in H x 0.25 in Dia x 5.5 ft L	Cartridge of 66 Inches	$78.99 USD $14.36/ft ($1.20/in)	1 CTR Standard Order	M410M510+1
2LSZH-125-2-YL-2Popular UPC: 754473942335	0.235 in H x 1 in W x 0.125 in Dia	Roll of 5000 Each	$1879.00 USD	1 ROL Standard Order	BBP11BBP12+6
LSZH-C-187-WT-JPopular UPC: 662820998082	0.335 in H x 0.187 in Dia x 175 ft L	Roll of 175 Feet	$308.99 USD $1.77/ft ($0.15/in)	1 ROL Standard Order	BBP72i7100+1
B33D-375-2-7641Popular UPC: 754473941642	0.645 in H x 2 in W x 0.375 in Dia	Roll of 250 Each	$410.99 USD	1 ROL Standard Order	BBP33i3300+2
M4C-125-7641Popular UPC: 888434592755	0.235 in H x 0.125 in Dia x 5.5 ft L	Cartridge of 66 Inches	$64.99 USD $11.82/ft ($0.98/in)	1 CTR Standard Order	M410M510+1
M4C-375-7641Popular UPC: 888434593820	0.645 in H x 0.375 in Dia x 5.5 ft L	Cartridge of 66 Inches	$78.99 USD $14.36/ft ($1.20/in)	1 CTR Standard Order	M410M510+1
2LSZH-250-2-WT-2Popular UPC: 754473942526	0.439 in H x 1 in W x 0.25 in Dia	Roll of 5000 Each	$3209.00 USD	1 ROL Standard Order	BBP11BBP12+5

Showing 1 to 15 of 398 parts

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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: -55°C to 105°C (-67°F to 221°F)

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)

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
Toluene	5	5
Gasoline	5	5
Skydrol 500B-4	1	1
Kerosene	1	1
Acetone	3	3
Toluene	Tested	Tested
Gasoline	Tested	Tested
Skydrol® 500B-4	Tested	Tested
Kerosene	Tested	Tested
Acetone	Tested	Tested

Environmental & Aging Durability Testing

Environmental Exposure Condition	Observation & Legibility Result
Service temperature	-55 to 105 °C

Verified Target Applications & Use Cases

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

Brady B-7641 Frequently Asked Questions & Engineering Guide

Verified technical answers on physical adhesion, temperature thresholds, ribbon pairings, and replacement standards for B-7641.

Brady B-7641 is a high-performance Heatshrinktubing(2:1),lowsmokezerohalogen,flameretardant,polyolefinsleeves 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 -55°C to 105°C (-67°F to 221°F) performance.

Brady B-7641 is rated for continuous service temperatures from -55°C to 105°C (-67°F to 221°F). In laboratory heat-aging tests, it maintains dimensional stability and barcode contrast across broad thermal cycles.

Need Custom Engineering Validation for Brady B-7641?

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

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