Professional-grade thermosetable glass cloth tape with superior heat resistance and adhesion for industrial splicing and insulation applications up to 450°F.
3M™ Thermosetable Glass Cloth Tape 365 is a premium industrial adhesive tape engineered for demanding applications requiring high tensile strength and superior heat resistance. Constructed with a durable glass cloth backing and thermosetable rubber adhesive, this white tape is specifically designed for splicing textured surfaces and materials with rough surfaces or low internal strength such as roofing felts and textiles. The tape excels in applications ranging from aerospace to construction, delivering exceptional performance across diverse industrial sectors.
The thermosetable rubber adhesive provides excellent initial adhesion and high tack properties that cross-link when exposed to a thermosetting cycle, resulting in significantly enhanced adhesion, bond strength, and heat resistance. The glass cloth backing offers high tensile strength of 2224 oz/in (2430 N/100mm) and will not shrink or rot, making it ideal for extended performance in challenging environments. With good solvent resistance and superior abrasion and puncture resistance, this tape maintains its integrity under a wide range of temperatures from -29°C to 232°C (-40°F to 450°F).
This professional-grade tape is supplied in a convenient 12 roll case format, with each roll measuring 3 inches in width and 60 yards in length with a total thickness of 8.3 mil. It meets stringent industry specifications including ASTM D3330, D3652, D3758, and FAR 25.853(a), ensuring compliance with aerospace and military standards. Ideal for splicing and insulating applications, corrosion-resistant wrapping on stainless steel hot air ducts, and bonding fiberglass webs, this tape delivers consistent, reliable performance for industrial and occupational use.
Key Features
- Thermosetable rubber adhesive cross-links when exposed to heat for enhanced bond strength and higher heat resistance
- Glass cloth backing provides exceptional tensile strength of 2224 oz/in for demanding applications
- Durable backing resists shrinking, rotting, abrasion and puncture for extended performance
- Excellent solvent resistance maintains adhesion under various environmental conditions
- Wide operating temperature range from -29°C to 232°C (-40°F to 450°F) for versatile industrial use
- Meets aerospace and military specifications ASTM D3330, D3652, D3758, and FAR 25.853(a)
- Conformable backing adapts to textured and rough surfaces for superior coverage
- Ideal for splicing roofing felts, fiberglass, textiles and other low-strength materials
Technical Specifications
| Specification |
Value |
| Product Name | 3M Thermosetable Glass Cloth Tape 365 |
| Part Number | 365 |
| 3M ID | 7000048540 |
| UPC Code | 00021200030215 |
| Backing Material | Glass Cloth |
| Adhesive Type | Thermosettable Rubber Resin |
| Product Color | White |
| Overall Width (Imperial) | 3 inches |
| Overall Width (Metric) | 76.2 mm |
| Overall Length (Imperial) | 60 yards |
| Overall Length (Metric) | 54.8 meters |
| Total Tape Thickness (Imperial) | 8.3 mil |
| Total Tape Thickness (Metric) | 0.2 mm |
| Backing Thickness (Imperial) | 4.8 mil |
| Backing Thickness (Metric) | 0.12 mm |
| Adhesive Thickness (Imperial) | 3.5 mil |
| Adhesive Thickness (Metric) | 0.08 mm |
| Core Size (Imperial) | 3 inches |
| Core Size (Metric) | 7.62 cm |
| Tensile Strength (Imperial) | 2224 oz/in |
| Tensile Strength (Metric) | 2430 N/100mm |
| Elongation at Break | 7% |
| Maximum Operating Temperature (Fahrenheit) | 450°F |
| Maximum Operating Temperature (Celsius) | 232°C |
| Minimum Operating Temperature (Fahrenheit) | -40°F |
| Minimum Operating Temperature (Celsius) | -29°C |
| Shelf Life | 18 months |
| Units per Case | 12 rolls |
| Smallest Saleable Unit | Roll |
| Specifications Met | ASTM D3330, D3652, D3758, F.A.R. 25.853(a) |
| Application | Splicing Together Fiberglass Web |
| Indoor/Outdoor | Indoor/Outdoor |
| Industries | Aerospace, Automotive, Construction, General Industrial, Military & Government, Specialty Vehicles, Transportation |
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