Double-Sided PTFE Tape / Double-Coated PTFE Tape / PTFE Fiberglass Mounting Tape

Product Specification

1. Product Overview

Nomay Double-Sided PTFE Tape, also called double-coated PTFE tape or PTFE fiberglass mounting tape, uses a PTFE-coated woven fiberglass carrier with silicone pressure-sensitive adhesive on both faces.

The product joins two compatible components and normally remains inside the assembled joint. It is intended for applications such as gasket positioning, wear-pad attachment and equipment assembly where a reinforced, double-sided adhesive construction is required.

Both outer faces are adhesive. Unlike single-sided PTFE tape, this construction does not provide an exposed non-stick PTFE working face after normal installation.

Selection depends on both bonding materials, joint dimensions, temperature, exposure time and mechanical load.

2. Product Construction

The construction consists of:
- First bonding face: Silicone pressure-sensitive adhesive.
- Internal carrier: PTFE-coated woven fiberglass cloth.
- Second bonding face: Silicone pressure-sensitive adhesive.
- Temporary protective layer: Release liner arranged for winding, handling and installation.

The release liner separates and protects adhesive surfaces before use. Its material, release treatment and arrangement must be compatible with the silicone adhesive and the intended converting process.

Carrier thickness, the two adhesive-layer thicknesses and finished tape thickness are different measurements. Finished tape thickness excludes the removable liner unless explicitly stated otherwise.

Using silicone adhesive on both faces does not establish identical coating thickness or equal peel performance. Specify any requirement for matched or different side performance in the order.

3. Backing & Adhesive System

PTFE-coated fiberglass carrier:
The woven reinforcement supports handling and dimensional stability during installation. Its contribution to the joint depends on the cloth construction, coating and complete tape design.

The PTFE coating is inside the adhesive assembly. Its presence does not make the outward adhesive faces non-stick or establish a low-friction contact surface.

Silicone adhesive:
Each adhesive face bonds to a different component. Both interfaces must be selected for their actual surface material, finish, cleanliness and operating conditions.

A bond that performs well on one side can still fail at the other interface. Evaluate the complete assembly rather than relying on a single peel value.

Silicone adhesive is not automatically suitable for every plastic, rubber or coated surface. Where silicone transfer could affect subsequent painting, coating or bonding, include that requirement during selection.

4. Available Specifications

Specify the following for the selected double-sided construction:
- Carrier: PTFE-coated woven fiberglass cloth.
- Adhesive: Silicone pressure-sensitive adhesive on both faces.
- Finished tape thickness: Carrier plus both adhesive layers, excluding the release liner.
- Width: Required finished width and tolerance.
- Roll length: Required finished-roll length.
- Color: Brown carrier; finished appearance can vary with adhesive and liner.
- Release liner: Material and arrangement matched to silicone adhesive and converting requirements.
- Supply format: Rolls, sheets, strips or die-cut mounting parts.

The enterprise data supplied for general PTFE silicone tape and ordinary double-sided glass-cloth tape do not independently establish the finished specifications of this PTFE-coated double-sided construction.

Do not substitute ordinary double-sided glass-cloth dimensions or a single-sided tape thickness as the finished specification.

For converted parts, provide the drawing, tolerances, liner-retention requirements and any orientation marks needed to distinguish the two bonding faces.

Final dimensions and performance values are recorded in the selected model specification and quotation.

5. Key Features & Buyer Benefits

- Adhesive on both faces: Joins two compatible components using one carrier-based tape.
- Woven reinforcement: Supports handling and dimensional control during placement.
- Defined tape thickness: Helps manage the space occupied by the joint.
- Release liner: Protects the adhesive and supports handling before the second component is attached.
- Converted shapes: Help match gasket outlines, pads and other mounting geometries.
- Pressure-sensitive installation: Allows bonding through applied pressure without mixing a liquid adhesive.

The tape can assist positioning or attachment where the joint is suitable. It is not automatically a replacement for structural fasteners or a guarantee of equal adhesion on both sides.

6. Application Procedure

Identify both bonding surfaces and the expected load before installation. Check that the selected tape and joint geometry suit the operating temperature and exposure duration.

Stop and isolate equipment where required. Clean both surfaces using compatible methods, then ensure they are dry and free from oil, dust, loose coatings and release agents.

Apply the first adhesive face to the selected component with even pressure. Avoid stretching the tape, trapping air or bridging gaps that prevent contact.

Remove the remaining release liner, position the second component and apply pressure across the joint. Follow the selected model's installation-temperature and conditioning requirements before applying service loads.

For gaskets, position the tape so that it does not obstruct required openings or alter the intended compression arrangement. For wear pads, the pad remains the exposed contact component; the tape sits beneath it.

Trial the completed assembly under representative heat, load and cycle conditions. Inspect both interfaces for lifting, sliding or separation.

Store unused material with its liner protection intact, away from heat, sunlight and contamination, following the supplied storage and shelf-life instructions.

7. Application Industries

Relevant industries include:
- Industrial equipment assembly.
- Packaging and sealing-machine component assembly.
- Gasket and pad converting.
- Machinery maintenance and replacement parts.
- Conveyor accessory assembly where the joint requirements are satisfied.

Uses in moving or loaded assemblies depend on the actual joint design. This is not automatically a conveyor-belt splicing tape or a structural bonding product.

Electrical insulation, food contact and other special requirements need their own applicable model information. The FDA status of a separate white PTFE product is not transferred to this construction.

8. Application Scenarios / Problems Solved

Gaskets shifting during assembly:
The two adhesive faces can help position a compatible gasket against its mating component. The gasket and assembly design remain responsible for the required sealing function.

Wear pads needing attachment:
The tape can form the bonding layer beneath a compatible pad. The pad provides the exposed wear surface, while the tape joins it to the support.

Small components difficult to position:
A defined strip or die-cut shape can help place adhesive only where the joint requires it.

Different materials needing a common mounting layer:
The two silicone adhesive interfaces can be evaluated against the respective substrates. Performance on one material does not establish performance on the other.

Joint thickness affecting fit:
A specified finished tape thickness helps assess clearance and assembly dimensions. Carrier thickness alone is insufficient for this calculation.

Converted parts difficult to handle:
A suitable release liner can retain and organize parts before installation. Liner release and cut settings must suit the adhesive construction.

9. Performance & Operating Conditions

Temperature:
Confirm continuous temperature, peak temperature and exposure duration for the complete double-sided joint. Thermal survival of the carrier is not the same as adhesive holding performance under load.

A generic PTFE temperature range does not establish a loaded-joint rating. Do not interpret a material's maximum temperature as permission for continuous mounting service at that temperature.

Peel strength:
Specify results for both adhesive faces, including the tested substrate, specimen width, peel angle, test speed and conditioning. If both sides are tested against the same standard panel, record that basis explicitly.

Shear and holding performance:
Consider component weight, bonded area, load direction, temperature and duration. A peel result does not replace holding-power or creep information.

Surface compatibility:
Evaluate low-surface-energy materials, textured surfaces, coated parts and flexible components individually. Avoid assuming that greater pressure alone resolves a material mismatch.

Chemical exposure:
Cleaning fluids or process chemicals may reach the joint edges and affect the adhesive. Evaluate the complete assembly under its actual exposure conditions.

Structural suitability:
Do not use the tape as the sole attachment for heavy, suspended or safety-critical components without an appropriate validated joint design.

10. Comparison & Selection Guide

Double-sided versus single-sided PTFE tape:
Choose the double-sided construction to join two components. Choose single-sided tape when an exposed PTFE release or sliding face is required.

PTFE-coated glass carrier versus ordinary glass-cloth carrier:
Compare the complete construction and joint performance. The PTFE coating changes the carrier structure but does not automatically improve every bonding application.

Same adhesive chemistry versus matched side performance:
Silicone on both faces does not guarantee identical peel values or coating thicknesses. Specify whether the two interfaces need similar or different behavior.

Rolls versus die-cut parts:
Rolls suit continuous strips and on-site trimming. Die-cut parts can match outlines, openings and repeat placement requirements.

Tape versus mechanical attachment:
Use tape where the joint design and validated performance support it. Retain mechanical support where the load or failure consequences require it.

Thickness selection:
Consider the complete tape thickness, contact area and surface geometry. Do not select using carrier thickness alone or assume a thicker product always holds more load.

11. Technical Notes + FAQ

Technical notes:
The order specification should identify both substrates, finished thickness, dimensions, adhesive-side requirements, liner format and operating loads. Model data should describe the complete double-sided construction.

Q: Is this tape adhesive on both sides?
A: Yes. Silicone pressure-sensitive adhesive is applied to both faces of the PTFE-coated fiberglass carrier.

Q: Does it leave a non-stick PTFE surface exposed?
A: Normally no. Both faces form adhesive interfaces between components. Use a single-sided version for an exposed PTFE working face.

Q: Is finished thickness the same as carrier thickness?
A: No. Finished tape thickness includes the carrier and both adhesive layers, excluding the removable liner.

Q: Are both adhesive faces equally strong?
A: Equal performance is not implied by using the same adhesive chemistry. Compare the two faces under defined test conditions and on the actual substrates.

Q: Is peel strength enough to select a mounting tape?
A: No. Temperature, shear load, creep, bonded area and load duration also affect suitability.

Q: Can it bond directly to PTFE or silicone rubber?
A: Do not assume compatibility. These surfaces require application-specific testing and an appropriate bonding approach.

Q: Can it replace screws or bolts?
A: Only where the joint design and validated performance support that use. It is not a universal structural-fastener replacement.

Q: Can it operate continuously at 300°C?
A: Such a rating has not been established for this complete loaded joint. Provide the actual temperature, duration and load for model selection.

Q: Can it be supplied as gasket-shaped or other die-cut parts?
A: Submit the drawing, tolerances and liner requirements for the selected converting format.

12. Inquiry CTA

Contact Nomay for double-sided PTFE fiberglass tape for gasket positioning, pad attachment and equipment assembly.

Provide your application, both bonding-surface materials, process temperature, exposure time, required finished thickness, width, roll length, quantity and destination country.

Include component weight or service load, load direction, bonded area, surface finish and any required peel or holding performance. State whether the adhesive faces need different properties.

For converted parts, attach a dimensioned drawing with tolerances, liner requirements and assembly orientation.

Nomay will use this information to confirm the suitable model, specifications, minimum order quantity and price, and identify the appropriate sample for joint evaluation.