Self-welding sealing tapes are essential components in gas distribution systems using corrugated polyethylene pipes. Installers and service technicians working on gas lines for heating, ventilation, and industrial applications often require reliable sealing solutions. In residential and commercial buildings, these tapes ensure that joints remain airtight and secure under varying operational conditions. They are particularly useful in tight spaces and where high mechanical resistance is needed. Proper application supports long-term system integrity and minimizes the risk of leaks.

ALPEX-GAS systems rely on precision in both material and method to achieve optimal performance. This sealing tape is designed to work with corrugated pipe systems where traditional gaskets or tapes may not provide sufficient adhesion or durability. The tape is applied directly to the outer surface of the corrugated pipe prior to fitting installation, ensuring a continuous and uniform seal along the joint. This approach is commonly used in gas lines where the system is exposed to environmental stress and requires minimal maintenance over time.

Technical parameters

Weight	0.1 kg
Code	IVAG0897035
Brand	IVAR

The dimensions of the sealing tape—0.76 mm thickness, 3.5 mm width, and 25 mm length—define its suitability for specific pipe diameters and fittings. These measurements influence the coverage area and the ability to conform to the corrugated surface. The thickness ensures sufficient material for self-vulcanization, while the width allows for even application without overlapping or gaps. The length is appropriate for single joint sealing, aligning with standard installation practices for corrugated gas lines.

Installation and connection

Before applying the sealing tape, the outer surface of the corrugated pipe must be cleaned of dust, grease, and debris. The tape is then wrapped around the pipe section that will be inserted into the fitting. Care must be taken to maintain consistent tension and alignment to prevent twisting or misalignment. Once the tape is in place, the pipe is inserted into the fitting until it reaches the stop point. The self-vulcanizing property activates upon contact with the fitting’s internal surface, forming a durable bond.

Common installation errors include insufficient cleaning of the pipe surface, incorrect tension during wrapping, and failure to align the tape properly. These issues can lead to weak seals and potential leakage. Installers should also verify that the tape is fully covered by the fitting after insertion to ensure complete encapsulation. A visual inspection and pressure test are recommended after installation to confirm the integrity of the joint.

Compatibility and accessories

This sealing tape is specifically designed for use with IVAR.KOT-GAS corrugated pipes as part of the ALPEX-GAS system. It is compatible with standard fittings and valves used in gas line installations. To complete the system, installers may need to order additional components such as corrugated pipes, end caps, and connectors. While no alternative products are listed, it is important to use only manufacturer-recommended accessories to ensure full system compatibility and performance.

Technical background for designers

The sealing tape is made from self-vulcanizing polyisobutylene, a material known for its elasticity and resistance to environmental factors. Upon application, the tape adheres to the pipe surface and undergoes a chemical reaction that hardens the material, creating a durable and airtight bond. This process eliminates the need for additional adhesives or sealants. The integration of the tape into the system relies on the correct fit between the corrugated pipe and the fitting, ensuring that the tape remains compressed and sealed under normal operating conditions. Factors such as pipe diameter, surface condition, and ambient temperature can influence the effectiveness of the seal and the overall system longevity.

Service and operation

During regular system inspections, technicians should check the integrity of the sealing tape by visually inspecting the joint for signs of wear, cracking, or separation. Any irregularities should be addressed immediately to prevent potential gas leaks. Since the tape is self-vulcanizing and does not require scheduled replacement, there are no defined service intervals. However, if a joint is removed or damaged during maintenance, the tape must be reapplied according to the manufacturer’s instructions before reassembling the system.

Frequently asked questions

Can this sealing tape be reused after removal?
No, once the tape has been applied and vulcanized, it cannot be reused. A new piece must be used for each joint.

Is it suitable for all types of corrugated gas pipes?
It is specifically designed for IVAR.KOT-GAS corrugated pipes. Using it with other types may compromise the seal.

What happens if the tape is not applied correctly?
An improperly applied tape may not form a proper seal, increasing the risk of gas leakage and system failure.

Can it be used in high-pressure gas lines?
Yes, provided the installation follows the manufacturer’s guidelines and the system is within the specified operational limits.