Reliable fire stopping for pipe penetrations – from standard collars to flexible endless solutions

A fire protection collar consists of an intumescent material inserted into a metal housing. The collar, which is installed around a combustible pipe, expands in case of fire and seals the opening left behind by the melting pipe, thus preventing the passage of fire and smoke.

Fire protection collars are used as an additional pipe cover to seal combustible pipelines in walls and floors.

All collars has been tested in accordance with DIN EN 1366-3 for pipe penetrations and are classified in accordance with DIN EN 13501-2 (fire resistance classes, e.g. EI 90, EI 120 or EI 240 - depending on the pipe material, wall/ceiling thickness and collar width).

First of all, there are dimension-specific fire protection collars. They are pre-assembled and are suitable for the respective diameter of the pipe. Endless collars are another variant. They are cut to length on site for the respective pipe and offer a high level of flexibility, especially in complex installation situations. Both types of collars are assembled externally on the wall (external wall collars). Furthermore, there are fire protection wraps that are installed within the structural opening (internal wall collars).

Fire protection collars are installed on both sides of the wall and on the underside of the ceiling. Non-combustible fasteners are used to secure them to the building element.

Endless collars are cut to size on site and wrapped around the pipe to fully enclose. They are then secured with fasteners to the building surface. Installation is quick and efficient, requiring minimal tools and no need for pre-sized collars, even for larger or variable pipe diameters.

The Endless Collar is a flexible fire protection collar designed to seal off combustible pipework in walls and ceilings. It is primarily used where pipe diameters are non-standard, for example in plumbing and HVAC installations. Thanks to its endless design, it can be customised to suit individual requirements – making it ideal for large dimensions or where space is limited.

The biggest advantage of the Endless Collar is its flexibility: the continuous collar strap adapts to different pipe diameters and challenging installation situations. This is particularly useful where space is limited or where there are unusual geometries.

Collars are primarily used for combustible pipes. Depending on the installation situation and the pipe diameter, a classic pipe collar or an endless collar could be the best fit. The ECP is suitable for combustible and non-combustible pipes, as well as multilayer composite pipes, electrical installation conduits, and HVAC split line combinations.

Wraps are used within the structural opening and are particularly suitable for insulated pipes or special pipe systems, especially where the fire protection solution is integrated into the penetration itself. Collars, by contrast, are installed externally around the pipe and are typically used for combustible pipes. The choice between wraps and collars therefore depends on the pipe material, insulation and installation scenario.

A fire protection collar consists of an intumescent building material that is inserted into a metal housing and placed around the pipe to be sealed.

It is important to ensure that a collar that is suitable for the pipe diameter is used. Furthermore, it is essential that the installation guidelines described in the approval for use and the manufacturer’s installation manual are followed. These describe the permitted pipe types, diameters, and arrangements.

Yes, many fire protection collars are suitable for use in outdoor or exposed environments. They are resistant to humidity, freeze-thaw cycles and UV radiation, making them suitable for demanding conditions such as external walls, unheated areas or installations exposed to weather conditions.