3M™ Glass Cloth Tapes

3M™ Glass Cloth Tape 365

Q: What’s the typical lead time for converted formats?

siness days , depending on complexity and order size.

Q: Can I get pre-cut formats for small-batch applications?

Yes, we support low-volume and prototype production with flexible order sizes.

Q: What kind of parts can you die-cut from Glass Cloth Tape?

We offer die-cut seals, tabs, gaskets , or custom forms – on liner or in sheets – for easy handling.

Q: Can you convert 3M 365 into narrow-width rolls?

Absolutely. We slit to widths as narrow as 3 mm with precision control .

Q: How is 3M 365 different from standard Glass Cloth Tape?

It features a thermosetable rubber adhesive that cross-links during heating, creating a stronger, heat-resistant bond ideal for textured or low-strength surfaces.

3M™ Glass Cloth Tape 365 is a high-performance white glass cloth tape featuring a thermosetable rubber adhesive that cross-links under heat to provide strong bonding, increased heat resistance, and long-lasting durability. Especially effective for splicing rough surfaces like roofing felts, fiberglass, and textiles, this tape also offers high tensile strength, solvent resistance, and excellent abrasion and puncture resistance.

The 3M 365 Glass Cloth Tape stands out when converted to application-ready formats by EKO-TECH, your trusted 3M Select Converter.

Where to Use 3M™ Glass Cloth Tape 365?

3M™ Glass Cloth Tape 365 is designed for industries and environments demanding mechanical strength, high-heat tolerance, and surface flexibility:

Splicing rough, fibrous materials (roofing felts, fiberglass, textiles)
Insulation or wrapping for hot air stainless steel ducts
Bonding textiles requiring heat-set strength
Corrosion-resistant wrap under thermal or chemical exposure
High tensile strength insulation in electrical or HVAC environments

Why Choose 3M™ Glass Cloth Tape 365?

Thermosetting Adhesive: Cross-links under heat (ironing, heating) for enhanced bond strength
High Initial Tack: Sticks fast to rough or low-strength surfaces
Superior Durability: Withstands punctures, abrasion, rot, and shrinkage
High Temperature Resistance: Performs up to 450°F / 232°C
Solvent Resistant: Remains affixed in chemically demanding environments
Productivity-Boosting: Strong glass cloth backing supports heavy-duty industrial applications

Converting Capabilities by EKO-TECH – Tailored 3M 365 Formats

We don’t just supply 3M™ Glass Cloth Tape 365 — we convert it to make your operations more efficient:

Slitting – to exact widths for automated or manual application
Rewinding – into custom roll lengths for easier handling
Sheeting – flat formats for panel masking, lamination, or insulation
Die & Kiss Cutting – precision parts ready for fast assembly or sealing

From roll-to-roll production to complex shaped gaskets, EKO-TECH ensures top-quality customization.

Why Work with a 3M Select Converter Like EKO-TECH?

EKO-TECH is a certified 3M Select Converter – a recognition granted only to trusted and experienced partners:

3M-Endorsed Expertise – We match 3M’s high technical standards in converting
Application-Focused Consulting – Tailored guidance for complex bonding or insulation tasks
Advanced Production Infrastructure – High-volume and prototype runs available
EU-Wide Logistics – Consistent delivery timelines and technical support

EKO-TECH combines process knowledge with material excellence – your ideal partner for converting Glass Cloth Tapes like the 3M 365.

Our Converting Expertise – From Specification to Execution

At EKO-TECH, we go beyond tape supply – we offer intelligent converting services that fit your exact production flow:

Define the ideal tape format for your machine or application
Modify roll dimensions, thicknesses, or liner types
Design die-cut or kiss-cut parts for specific mounting challenge
Deliver in optimized formats – pre-cut, rewound, sheeting or kiss-cut

Whether it’s small components or industrial roll stock, we create smart tape solutions that perform under pressure.

Technical data

Adhesive Type Thermosettable Rubber Resin
Application Splicing Together Fiberglass Web
Back Side Adhesive Thickness (Imperial) 3.5 mil
Back Side Adhesive Thickness (Metric) 0.09 mm, 0.12 mm
Backing (Carrier) Material Glass Cloth
Backing (Carrier) Thickness (Imperial) 4.8 mil
Backing (Carrier) Thickness (Metric) 0.12 mm
Brands 3M™
Case Quantity 24/case, 36/case, 48/case
Core Size (Imperial) 3 in
Core Size (Metric) 7.62 cm
Elongation at Break 0.07 %, 7.0 %
Indoor/Outdoor

Industries Aerospace, Construction, Military & Government, Transportation, Automotive, General Industrial, Specialty Vehicle
Maximum Operating Temperature 121 ℃, 232 ℃
Maximum Operating Temperature (Fahrenheit) 450 ℉
Minimum Operating Temperature -29 ℃
Minimum Operating Temperature (Fahrenheit) -20 ℉, 40 ℉
Product Color White
Shelf Life 18 Month
Smallest Saleable Unit Roll
Specifications Met ASTM D3330, D3652, ASTM D3758, F.A.R. 25.853(a)
Tensile Strength (Imperial) 2224.0 oz/in
Tensile Strength (Metric) 57 N/100mm, 2430 N/100mm

Total Tape Thickness without Liner (Imperial) 8.3 mil
Total Tape Thickness without Liner (Metric) 0.2 mm, 0.21 mm
Units per Case 4.0, 8.0, 12.0, 24.0, 36.0, 48.0, 72.0
Overall Length (Imperial) 60 yd
Overall Length (Metric) 54.8 m, 54.86 m, 54.9 m
Overall Width (Imperial) 0.5 in, 0.8 in, 1 in, 1.5 in, 2 in, 3 in, 4 in, 5 in, 10 in
Overall Width (Metric) 12.7 mm, 19.05 mm, 25.4 mm, 38.1 mm, 50.4 mm, 76.2 mm, 101.6 mm, 127 mm, 254 mm

FAQ

What’s the typical lead time for converted formats?Monika Kluk2025-06-25T22:43:49+02:00

What’s the typical lead time for converted formats?

siness days, depending on complexity and order size.

Can I get pre-cut formats for small-batch applications?Monika Kluk2025-06-25T22:42:37+02:00

Can I get pre-cut formats for small-batch applications?

Yes, we support low-volume and prototype production with flexible order sizes.

What kind of parts can you die-cut from Glass Cloth Tape?Monika Kluk2025-06-25T22:41:21+02:00

What kind of parts can you die-cut from Glass Cloth Tape?

We offer die-cut seals, tabs, gaskets, or custom forms – on liner or in sheets – for easy handling.

Can you convert 3M 365 into narrow-width rolls?Monika Kluk2025-06-25T22:39:33+02:00

Can you convert 3M 365 into narrow-width rolls?

Absolutely. We slit to widths as narrow as 3 mm with precision control.

How is 3M 365 different from standard Glass Cloth Tape?Monika Kluk2025-06-25T22:33:13+02:00

How is 3M 365 different from standard Glass Cloth Tape?

It features a thermosetable rubber adhesive that cross-links during heating, creating a stronger, heat-resistant bond ideal for textured or low-strength surfaces.

Downloads

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Let’s Create the Perfect Tape Solution with 3M 365 – Contact EKO-TECH Today!

Need a tape that sticks, seals, insulates, and performs under heat? Let us customize the 3M™ Glass Cloth Tape 365 for your exact process.Talk to our specialists now for a quote, sample, or application consultation!