Custom Self-Adhesive Sealing Tapes

Sealing Tapes for Flexible Sealing

Sealing tapes are narrow, flexible sealing materials that are installed along a joint or component edge. Unlike a full-surface gasket, they do not cover the entire connection area, but are used specifically to seal an elongated gap or transition.

Many sealing tapes are made from compressible foams or cellular rubber. When the components are closed or joined together, the tape is compressed and adapts to the existing surface. In this way, minor irregularities and dimensional tolerances can be compensated for.

The sealing effect that can be achieved depends on the material, dimensions, compression and the specific installation situation. The respective product properties and application limits should therefore be checked on the product page.

What Does Self-Adhesive Sealing Tape Mean?

A self-adhesive sealing tape has an adhesive layer on one side, which is covered by protective paper or film until installation. After removing the protective layer, the tape is positioned on the prepared surface and pressed firmly into place.

The adhesive layer makes installation easier and keeps the sealing tape in the intended position. However, the actual sealing effect is primarily achieved by the sealing material itself, its ability to adapt to the surface and sufficient compression between the components.

Self-adhesive therefore does not automatically mean that a connection becomes permanently watertight, airtight or pressure-tight solely because of the adhesive layer. The design of the connection and the suitability of the selected sealing tape are always decisive.

Sealing Tapes Made from Cellular Rubber and Foam

Sealing tapes are available in different materials and material qualities. They differ, among other things, in their cell structure, firmness, compressibility, recovery properties and resistance to environmental influences.

EPDM Cellular Rubber Sealing Tape

EPDM cellular rubber has a closed-cell or largely closed-cell material structure. The flexible material can be compressed and therefore adapts well to minor irregularities and varying gap widths.

EPDM is often used for applications where weathering, UV radiation, ozone or changing temperatures play a role. Typical areas of use include windows, doors, façades, housings and technical components for indoor and outdoor applications.

Whether a specific EPDM sealing tape is suitable for water, chemicals or other media must be checked based on its respective material quality and product information.

PE Foam Sealing Tapes

PE foam is lightweight, flexible and available in different firmness levels. Sealing tapes made from polyethylene foam are used, for example, for windows, ventilation flaps, covers and light-duty technical sealing applications.

Depending on the design, the material can reduce draughts and dust, separate components from one another or serve as a cushioning and compensation layer. The specific resistance and load-bearing capacity depend on the respective foam quality.

Other Sealing Tape Materials

In addition to EPDM cellular rubber and PE foam, sealing tapes can also be made from other foams, elastomers or material combinations. Depending on the application, the focus may be on particularly soft, highly resilient, weather-resistant or media-resistant properties.

The materials currently available depend on the products offered. The technical information on the product pages allows a more precise selection for the respective application.

Selecting the Width and Thickness of the Sealing Tape

For a sealing tape to function reliably, its dimensions must match the sealing surface and the existing gap. In particular, width and thickness must be considered separately.

Determining the Right Width

The width depends on the available contact or adhesive surface. The sealing tape should rest fully on the component without protruding undesirably beyond edges, openings or moving elements.

Before ordering, the available surface should be measured at several points. This is particularly useful for older components, as dimensions may vary due to wear or deformation.

Determining the Right Thickness

The thickness of the sealing tape depends on the gap to be sealed and the required compression. When the connection is closed, the tape should be compressed sufficiently without being completely crushed or permanently overloaded.

If the tape is too thin, the material may not reach the opposite surface sufficiently. If the tape is too thick, however, it can make it more difficult to close windows, doors or flaps and may place excessive stress on the seal.

There is no universally applicable compression ratio for all sealing tapes. The material properties and the recommendations for the respective product are decisive.

Sealing Tape, Rubber Strip or Sealing Profile?

The terms sealing tape, rubber strip and sealing profile are sometimes used in a similar way, but they describe different product forms.

Sealing Tapes

Sealing tapes are usually relatively soft and compressible. They are often offered with a self-adhesive backing and are particularly suitable for sealing elongated joints, gaps and component transitions.

Rubber Strips

Rubber strips are usually made from more compact solid rubber. They are less compressible than foam or cellular rubber tapes and are used, for example, as underlays, protective strips, spacers or robust seals.

You can find suitable versions in the category self-adhesive rubber strips.

Sealing Profiles

Sealing profiles have a defined cross-section, for example as round cord, insert profiles or specially shaped edge seals. They are often installed in a groove, guide channel or along a specific component edge.

You can find suitable profile shapes in the sealing profiles section.

Sealing Tapes and Foam Seals

The term sealing tape primarily describes the narrow, tape-shaped product form. The term foam seal refers more specifically to the material and its structure.

A self-adhesive cellular rubber tape can therefore be both a sealing tape and a foam seal. Further full-surface, cut-to-size or specially designed versions for windows and technical components can be found in the category foam seals.

Advantages of Self-Adhesive Sealing Tapes

Self-adhesive sealing tapes allow quick installation and can be used for a wide range of sealing, insulation and decoupling tasks.

Depending on the material and design, they offer, among other things:

• simple and clean installation
• flexible lengths and custom cuts
• a choice of different widths and thicknesses
• adaptation to minor irregularities
• reduction of draughts, dust and noise
• damping of vibrations and rattling noises
• thermal and acoustic decoupling
• materials for indoor and outdoor applications
• solutions for repairs and new constructions

The properties actually achieved depend on the specific product and correct installation.

Order Custom Sealing Tapes from diconfa

At diconfa, you can find self-adhesive sealing tapes for windows, doors, roof windows, equipment and numerous technical applications. Depending on the product, width, thickness and length can be selected to suit the installation situation.

Benefit from:

• self-adhesive sealing tapes
• different foam and cellular rubber qualities
• various widths and material thicknesses
• individually selectable lengths
• sealing tapes for indoor and outdoor applications
• solutions for windows, doors and technical components
• custom cuts for individual requirements and larger quantities
• personal advice for special requirements

Select the right sealing tape based on material, width, thickness, length and intended application. Further sealing solutions can be found in the categories foam seals, sealing profiles and in our parent category seals.