Brady B-7641wire_heat_shrink_sleeve398 Orderable SKUs
PermaSleeve TM Marker
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
—
Heat-Shrink Wire Sleeve
B-7641 Application & Installation Blueprint
PermaSleeve® Heat-Shrink Wire Tubing • Physical application tolerances and surface engineering
Industrial Fit Certified
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
#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 | Hardware & Related |
|---|---|---|---|---|---|---|
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 |
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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 DirectoryCSA C22.2: Not certified
CSA DirectoryEnvironmental & 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.
Sponsored Industrial Label Solutions
Industrial Label Printers & Materials
Relevant Technical Equipment & Consumables [Ad Slot spec-mid-B-7641]
ASTM Physical & Mechanical Properties
Standardized laboratory test data measured in accordance with ASTM D 1000, ASTM D 2979, and ASTM D 2671.
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.