Brady B-438label_film_tape27 Orderable SKUs
B -438 THERMAL TRANSFER PRINTABLE TAMPER EVIDENT MATTE METALLIZED POLYESTER LABEL STOCK
Brady B -438 is a thermal transfer printable tamper evident matte metallized polyester label stock with a tamper indicating acrylic adhesive, designed for high performance and evidence of removal.
Material Composition
Metallized Polyester
Adhesive System
Tamper Indicating Acrylic
Operating Temperature
-40°C to 40°C (-40°F to 104°F)
Total Thickness
—
Tamper-Evident Security
B-438 Application & Installation Blueprint
Tamper-Evident & Security Void Warranty Seal • Physical application tolerances and surface engineering
Industrial Fit Certified
Security Seal & Warranty Tamper Application
1Apply across access screws, enclosure parting lines, or calibration ports on clean dry surfaces.
2Allow 24 hours for full acrylic cross-linking bond.
3Any removal attempt causes irreversible facestock fracturing or leaves a bold "VOID" footprint on substrate.
Engineering Tolerance: Irreversible optical tamper indication prevents unauthorized warranty claims or undetected enclosure access.
Substrate Compatibility & Adhesion Matrix
Anodized Aluminum Instrument Cases
Instant Tamper (5/5)
Calibrated Metrology Equipment
Instant Tamper (5/5)
Polycarbonate Enclosure Seams
Instant Tamper (5/5)
Powder-Coated Access Panels
Instant Tamper (4.8/5)
Tested Environmental Survivability
Anti-Peel Transfer ResistanceSolvent & Oil Wipe ProofThermal Shock ResistancePermanent Void Footprint
Recommended Field & Shop Tools:
i3300 / i5100 Benchtop PrinterM610 Handheld ToolR6000 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-438.
Popular B-438 Formats
Standard industrial rolls and die-cut sizes with unit cost breakdown#1 Popular Choice
Standard Part
B33-7-438
1.25 in H x 2.75 in W
Roll of 1000 Labels
Roll / Pack Total:$232.99 USD
Normalized Unit Cost:$0.23/label
Material Area Cost:$0.07/sq in
Supported Hardware:
i3300i5300BBP33+1
#2 Standard Format
Standard Part
THT-19-438-1
2 in H x 3 in W
Roll of 1000 Labels
Roll / Pack Total:$414.99 USD
Normalized Unit Cost:$0.41/label
Material Area Cost:$0.07/sq in
Supported Hardware:
BBP81i5100i6100+5
#3 High Capacity
Standard Part
B30-222-438
2 in H x 3 in W
Cartridge of 650 Labels
Roll / Pack Total:$261.99 USD
Normalized Unit Cost:$0.40/label
Material Area Cost:$0.07/sq in
Supported Hardware:
BBP30BBP31BBP33+8
All 27 Orderable Part Numbers
Pricing: $170.99 – $1169.00 USD
| Catalog SKU | Dimensions | Packaging / Qty | List Price & Unit Cost | Order MOQ | Compatible Printers | Hardware & Related |
|---|---|---|---|---|---|---|
B33-7-438Popular UPC: 888434564004 | 1.25 in H x 2.75 in W | Roll of 1000 Labels | $232.99 USD $0.23/label ($23.30/100) $0.07/sq in | 1 ROL Standard Order | i3300i5300+2 | |
THT-19-438-1Popular UPC: 662820301844 | 2 in H x 3 in W | Roll of 1000 Labels | $414.99 USD $0.41/label ($41.50/100) $0.07/sq in | 1 ROL Standard Order | BBP81i5100+6 | |
B30-222-438Popular UPC: 754473211622 | 2 in H x 3 in W | Cartridge of 650 Labels | $261.99 USD $0.40/label ($40.31/100) $0.07/sq in | 1 ROL Standard Order | BBP30BBP31+9 | |
B30-17-438Popular UPC: 754473211608 | 1 in H x 2 in W | Cartridge of 1225 Labels | $170.99 USD $0.14/label ($13.96/100) $0.07/sq in | 1 ROL Standard Order | BBP30BBP31+9 | |
B30C-3000-438-SLPopular UPC: 754473210984 | 3 in W x 100 ft L | Cartridge of 100 Feet | $208.99 USD $2.09/ft ($0.17/in) $0.06/sq in | 1 ROL Standard Order | BBP30BBP31+9 | |
B30-18-438Popular UPC: 754473211615 | 1 in H x 3 in W | Cartridge of 1225 Labels | $239.99 USD $0.20/label ($19.59/100) $0.07/sq in | 1 ROL Standard Order | BBP30BBP31+9 | |
THT-5-438-10 UPC: 662820301813 | 0.5 in H x 1 in W | Roll of 10000 Labels | $667.99 USD $0.067/label ($6.68/100) $0.13/sq in | 1 ROL Standard Order | BBP81i5100+6 | |
THT-14-438-10 UPC: 662820301783 | 0.2 in H x 0.65 in W | Roll of 10000 Labels | $457.99 USD $0.046/label ($4.58/100) $0.35/sq in | 1 ROL Standard Order | BBP81i5100+6 | |
B33-5-438 UPC: 888434563960 | 0.5 in H x 1 in W | Roll of 7000 Labels | $386.99 USD $0.055/label ($5.53/100) $0.11/sq in | 1 ROL Standard Order | i3300i5300+2 | |
THT-21-438 UPC: 662820301950 | 3 in W x 300 ft L | Roll of 300 Feet | $651.99 USD $2.17/ft ($0.18/in) $0.06/sq in | 1 ROL Standard Order | BBP81i5100+6 | |
THT-17-438-3 UPC: 662820301820 | 1 in H x 2 in W | Roll of 3000 Labels | $409.99 USD $0.14/label ($13.67/100) $0.07/sq in | 1 ROL Standard Order | BBP81i5100+6 | |
THT-53-438-3 UPC: 662820208914 | 0.5 in H x 2 in W | Roll of 3000 Labels | $392.99 USD $0.13/label ($13.10/100) $0.13/sq in | 1 ROL Standard Order | BBP81i6100+4 | |
THT-6-438-10 UPC: 662820208884 | 0.75 in H x 1.5 in W | Roll of 10000 Labels | $1169.00 USD $0.12/label ($11.69/100) $0.10/sq in | 1 ROL Standard Order | BBP81i6100+4 | |
THT-18-438-3 UPC: 662820301837 | 1 in H x 3 in W | Roll of 3000 Labels | $621.99 USD $0.21/label ($20.73/100) $0.07/sq in | 1 ROL Standard Order | BBP81i5100+6 | |
THT-7-438-3 UPC: 662820208891 | 1.25 in H x 2.75 in W | Roll of 3000 Labels | $702.99 USD $0.23/label ($23.43/100) $0.07/sq in | 1 ROL Standard Order | BBP81i6100+4 |
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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: 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 40°C (-40°F to 104°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: MH17154 / MH64936
UL DirectoryCSA C22.2: 041833
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-438]
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 R4300
Series R4500
* 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 | Tested | Tested |
| 1,1,1 -Trichloroethane | Tested | Tested |
| Freon TMS | Tested | Tested |
| Isopropyl Alcohol | Tested | Tested |
| Mineral Spirits | Tested | Tested |
| JP-4 Jet Fuel | Tested | Tested |
| ASTM Reference Fuel B | Tested | Tested |
| SAE 20 WT Oil | Tested | Tested |
| Mil 5606 Oil | Tested | Tested |
| Rust Veto 342 | Tested | Tested |
| Skydrol 500B -4 | Tested | Tested |
| Super Agitene | Tested | Tested |
| Deionized Water | Tested | Tested |
| 3% Alconox Detergent | Tested | Tested |
| 10% Sodium Hydroxide Solution | Tested | Tested |
| 10% Sulfuric Acid Solution | Tested | Tested |
Environmental & Aging Durability Testing
| Environmental Exposure Condition | Observation & Legibility Result |
|---|---|
| 438 THERMAL TRANSFER PRINTABLE TAMPER EVIDENT MATTE METALLIZED POLYESTER LABEL STOCK - Material Spec (Brady B-438) Material family | B-438 |
| 438 is a thermal transfer printable tamper evident matte metallized polyester label stock with a tamper indicating acrylic adhesive, designed for high performance and evidence of removal. ## Verified specifications - Material type | Metallized Polyester |
| Service temperature (min) | -40 °C |
Verified Target Applications & Use Cases
- Industrial rating plates, asset identification, and electrical component labeling.