Brady B-321wire_heat_shrink_sleeve
BradySleeve Marker
BRADYSLEEVE MARKER is a heat shrinkable, high density polyolefin film used to identify electrical wires and cables.
Material Composition
Heat shrinkable, high density polyolefin film
Adhesive System
Non-Adhesive
Operating Temperature
-40°C to 200°C (-40°F to 392°F)
Total Thickness
17 mils (0.432 mm)
Heat-Shrink Wire Sleeve
B-321 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-321.
Custom orderable roll sizes, continuous tapes, and die-cut parts for B-321 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: 2 Years 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: -40°C to 200°C (-40°F to 392°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 DirectoryHalogen-Free per DIN VDE 0472 Part 815
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.
Sponsored Industrial Label Solutions
Industrial Label Printers & Materials
Relevant Technical Equipment & Consumables [Ad Slot spec-mid-B-321]
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
Series R5000
Series R6200
* 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 |
|---|---|---|
| Methyl Ethyl Ketone | No visible effect | No visible effect |
| Toluene | No visible effect | No visible effect |
| Isopropyl Alcohol | Slight print fade | Slight print fade |
| JP-8 Jet Fuel | Slight print fade | Slight print fade |
| Kerosene | Slight print fade | Slight print fade |
| Mil 5606 Oil Topcoat | Slight print fade | Slight print fade |
| Mil 7808 Oil Topcoat | No visible effect | No visible effect |
| Speedi Kut Cutting Oil 332 | No visible effect | No visible effect |
| Gasoline | Slight print fade | Slight print fade |
| Rust Veto 377 Topcoat | Slight print fade | Slight print fade |
| Skydrol 500B-4 | Moderate print fade | Moderate print fade |
| Super Agitene | Slight print fade | Slight print fade |
| BIOACT EC-7R Terpene Cleaner | Slight print fade | Slight print fade |
| Deionized Water | No visible effect | No visible effect |
| 3% Alconox Detergent | No visible effect | No visible effect |
| 5% Salt (NaCl) solution | No visible effect | No visible effect |
| Propylene Glycol | No visible effect | No visible effect |
| Methyl Ethyl Ketone | Tested | Tested |
| Toluene | Tested | Tested |
| Isopropyl Alcohol | Tested | Tested |
| JP-8 Jet Fuel | Tested | Tested |
| Mil 5606 Oil | Tested | Tested |
| Mil 7808 Oil | Tested | Tested |
| Speedi Kut Cutting Oil 332 | Tested | Tested |
| Rust Veto® 377 | Tested | Tested |
| Skydrol® 500B-4 | Tested | Tested |
| Super Agitene® | Tested | Tested |
| BIOACT® EC-7R™ Terpene Cleaner | Tested | Tested |
| Deionized Water | Tested | Tested |
| 3% Alconox® Detergent | Tested | Tested |
| 5% Salt (NaCl) solution | Tested | Tested |
| Propylene Glycol | Tested | Tested |
Environmental & Aging Durability Testing
| Environmental Exposure Condition | Observation & Legibility Result |
|---|---|
| Service temperature | -40 to 200 °C |
Verified Target Applications & Use Cases
- Industrial rating plates, asset identification, and electrical component labeling.