3M™ 5451 PTFE Glass Cloth Tape

3M™ 5451 PTFE Glass Cloth Tape: features, applications and performance

The 3M™ 5451 PTFE glass cloth tape is designed to hold up where most tapes fail: high temperatures, sticky surfaces, and repeated friction.

Its PTFE coating on a glass cloth backing provides thermal resistance up to 260 °C and durable non-stick properties.

It is essential for thermal packaging, plastic sealing, and material guiding on production lines.

With the 3M™ 5451, you have a reliable, industry-proven technical tape, available from Dagobert Industrie.

Presentation of the 5451 PTFE glass cloth tape

The 3M™ 5451 PTFE glass cloth tape is a high-performance adhesive tape designed for demanding environments. It combines a PTFE-impregnated glass cloth backing with a high-temperature silicone adhesive.

It is a product from 3M, a world-leading manufacturer of industrial adhesive solutions. At Dagobert Industrie, we offer it to meet the needs of professionals in the packaging, welding, food processing, and heat treatment industries.

Product composition and structure

The 3M™ 5451 consists of three key elements:

• Backing: glass fiber fabric impregnated with PTFE (polytetrafluoroethylene)
• Adhesive: high-temperature silicone, resistant up to 260 °C continuous
• Surface finish: PTFE, offering very low adhesion to glues, resins, and molten materials

PTFE gives the tape its non-stick properties and chemical resistance. The glass cloth ensures mechanical and dimensional strength even under high heat.

Result: a stable, durable, and reusable tape, suitable for repeated thermal cycles on packaging machines, presses, sealing bars, and sliding surfaces.

Technical properties and performance of the 3M™ 5451

The 3M™ 5451 is a tape composed of glass cloth impregnated with PTFE (polytetrafluoroethylene), coated with a high-performance silicone adhesive. This combination gives it exceptional resistance in demanding environments.

It withstands temperatures up to 260 °C continuously, with even higher intermittent peaks. It is one of the most heat-resistant tapes in its class.

The PTFE surface is non-stick: glues, resins, molten plastics, and other materials do not stick to it. Ideal for protecting guides, platens, or sealing jaws.

Its other key strengths:

• High chemical resistance: solvents, acids, bases
• Low coefficient of friction for sliding applications
• Excellent dielectric strength
• Good mechanical strength thanks to glass cloth reinforcement
• Silicone adhesive stable over time, leaves no residue upon removal

Feature	3M™ 5451 (PTFE glass cloth)	3M™ 5490 (PTFE film)	Standard silicone tape
Max. continuous temp.	260 °C	260 °C	~200 °C
Mechanical strength	High (glass reinforcement)	Moderate	Low to moderate
Non-stickiness	Excellent	Excellent	Low
Conformability	Moderate	High	High
Typical use	Sealing jaws, conveyors	Flat surfaces, insulation	Masking, light fixation

The 3M™ 5451 stands out where heat, non-stickiness, and mechanical robustness must be combined. At Dagobert Industrie, we recommend it primarily for thermal packaging and impulse sealing applications.

Applications and areas of use for the 3M™ 5451 tape

The 3M™ 5451 PTFE glass cloth tape is designed for demanding industrial environments where heat, friction, and sticking are problematic.

Its non-stick PTFE surface prevents materials from sticking, even at high temperatures. It withstands continuous temperatures up to 260 °C, with even higher intermittent peaks.

The glass cloth reinforcement gives it excellent mechanical strength. It does not deform under tension and remains stable over time, even in repeated thermal cycles.

Relevant industrial sectors

This tape is used in a wide variety of industrial processes. Here are the most common applications:

• Packaging and heat sealing: protection of sealer jaws, packaging machine guides
• Food industry: conveyor surfaces, cooking plates, molds, compliance with hygiene requirements
• Plastics and composites: demolding of parts, protection of presses and heating platens
• Textile and printing: thread guiding, calendering rolls, thermal protection of industrial ironing tables
• Electronics and electrical engineering: thermal insulation of cables, protection of components exposed to heat

At Dagobert Industrie, we recommend this tape wherever you need to combine non-stickiness, thermal resistance, and mechanical durability in a single solution.

It advantageously replaces liquid PTFE coatings or non-reinforced films, with faster implementation and a much longer service life under friction conditions.

Comparison: 3M™ 5451 PTFE tape versus other non-stick tapes on the market

The market for non-stick tapes offers several solutions. The 3M™ 5451 stands out for its glass cloth + PTFE combination, but it is not the only one. Here is how it positions itself against its main competitors.

Product	Backing	Thickness	Max Temp	Adhesive	Strengths
3M™ 5451	PTFE glass cloth	0.18 mm	260 °C	Silicone	Mechanical + thermal resistance, repositionable
3M™ 5480	Pure PTFE film	0.08 mm	260 °C	Silicone	Very thin, complex surfaces, lower abrasion resistance
Saint-Gobain woven PTFE	PTFE glass cloth	0.13-0.25 mm	260 °C	Silicone / non-adhesive	Wide range of thicknesses, often sold non-adhesive
Nitto 903UL	PTFE film	0.08 mm	260 °C	Silicone	Good conformability, frequent electronic use

The 3M™ 5480 is thinner and better conforms to complex shapes. However, it is less resistant to mechanical abrasion than the 5451, whose glass cloth reinforces the structure.

Saint-Gobain tapes offer a wide range of thicknesses. They are often offered without adhesive, which requires mechanical fastening, a constraint absent with the 5451.

The Nitto 903UL is well suited for electronics. For industrial applications subject to repeated mechanical and thermal stresses, the 5451 remains more robust.

In summary: the 3M™ 5451 is the preferred choice whenever the work surface is subject to friction, pressure, or intensive thermal cycles.

Implementation and application tips

The 3M™ 5451 PTFE glass cloth tape is simple to apply, but a few precautions ensure optimal hold over time.

Carefully prepare the surface before any application. It must be clean, dry, and degreased. A contaminated surface (oil, dust, residual moisture) compromises the adhesion of the silicone adhesive.

Apply the tape at room temperature, ideally between 15 °C and 35 °C. Below 10 °C, the adhesive becomes less flexible and application is more difficult.

Unroll the tape without excessive tension. Tape applied under excessive tension can shrink slightly after application and peel at the edges.

For curved or cylindrical surfaces (machine rollers, pulleys…), proceed in small sections while chasing out air bubbles with a pressure roller or your thumb.

Apply firm and uniform pressure over the entire length after application. Using a roller significantly improves the adhesive/substrate contact.

Allow a 24-hour setting time before the first temperature increase. This period allows the silicone adhesive to develop its full thermal resistance.

For overlaps, provide an overlap of at least 5 mm between two strips. Avoid butt joints which create points of weakness.

• Do not stretch the tape when cutting
• Use sharp scissors or a utility knife for a clean cut
• Do not expose the tape to aggressive solvents after application
• Store the roll flat, away from UV light and humidity

FAQ - 3M™ 5451 PTFE glass cloth tape

1. What is the maximum temperature the 3M™ 5451 tape can withstand?

The 3M™ 5451 PTFE glass cloth tape withstands temperatures up to 260 °C continuously. It can handle intermittent thermal peaks beyond that without degrading immediately.

This is one of the reasons it is preferred in thermal packaging, impulse sealing, and high-temperature conveying applications.

2. Is the 3M™ 5451 tape reusable?

Yes. Thanks to the PTFE coating and silicone adhesive, the tape can be removed and repositioned several times without leaving residue.

Its durability is significantly superior to that of a conventional polyimide tape in hot and abrasive environments.

3. What is the difference between the 3M™ 5451 and the 3M™ 5453?

The 3M™ 5451 is a PTFE glass cloth tape with a pressure-sensitive silicone adhesive. The 3M™ 5453 is a non-adhesive version, used as a fixed non-stick surface.

The 5451 is therefore suitable for applications where temporary or semi-permanent fixation is required, whereas the 5453 is simply placed or stapled.

4. Which surfaces does the 3M™ 5451 tape adhere to properly?

It adheres to most smooth and clean surfaces: metal, rigid plastic, glass, ceramic. A degreased surface significantly improves grip.

On porous or very rough surfaces, adhesion may be reduced. In this case, higher application pressure is recommended.

5. Is the 3M™ 5451 tape resistant to chemicals?

Yes. PTFE (polytetrafluoroethylene) offers excellent resistance to solvents, oils, diluted acids, and bases. It is one of the most chemically inert polymers.

This property makes it useful in the chemical, food, and pharmaceutical industries, where contact with aggressive substances is frequent.

6. How to cut the 3M™ 5451 tape cleanly?

Use scissors or a utility knife with a new blade. The glass cloth is resistant to manual tearing, so a sharp blade is essential for a clean cut.

For repeated cutting in production, a guillotine shear or an automated cutting system provides the best results.