Brady BT-8815: Tsoft3ST-80 Thermally Conductive Material Gap Filler
Brady Tsoft3ST-80 is a thermally conductive material gap filler designed to manage heat in electronic applications, available in green color with both sides tacky and thickness of 80 mil (2.0 mm).
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
80 mils (0.0080 in)
2.032 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
<10 ppm (Static Headspace Outgassing Method)
Tested
Tested
<1000 ppm (Solvent Extraction by GC-MS)
Tested
Tested
<1% (Weight Loss, 24 hrs@200 C)
Tested
Tested
Environmental & Aging Durability Testing
Environmental Exposure Condition
Observation & Legibility Result
80 Thermally Conductive Material Gap Filler - Material Spec (Brady BT-8815)
Material family
BT-8815
80 is a thermally conductive material gap filler designed to manage heat in electronic applications, available in green color with both sides tacky and thickness of 80 mil (2.0 mm).
## Verified specifications
- Construction
Sheet Form, Both Side Tacky
Service temperature
-40 to 150 °C
Verified Target Applications & Use Cases
Industrial rating plates, asset identification, and electrical component labeling.
Verified technical answers on physical adhesion, temperature thresholds, ribbon pairings, and replacement standards for BT-8815.
Brady BT-8815 is a high-performance Industrial substrate designed specifically for rating plates, asset tags, and industrial equipment identification. It features a Both Side Tacky engineered for long-term industrial reliability in environments requiring -40°C to 150°C (-40°F to 302°F) performance.
Brady BT-8815 is rated for continuous service temperatures from -40°C to 150°C (-40°F to 302°F). In laboratory heat-aging tests, it maintains dimensional stability and barcode contrast across broad thermal cycles.
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