The penetration is finished with a layer of DRIFIL sealant about 20 mm thick on the resultant carrier. DRIFIL is a water-repellent sealant based on a single-compound silicone material. The sealant is adheres to a wide variety of surfaces such as steel, stainless steel and aluminium as well as to metal and plastic pipes. The top-layer is rapidly tack-free

RISE crusher collars are used for the fire-resistant ducting of plastic pipes through fire-rated bulkheads and decks. Where plastic pipes are ducted they pose a serious source of problems in the event of fire. At a temperature of about 75 °C the plastic softens, and spontaneous ignition occurs at about 140 °C. This allows the fire to spread via the resultant opening in the deck/bulkhead or wall/ceiling, as the case may be.

To meet this problem the RISE crusher collar has been developed. The collar consists of two metal caps filled with FRR/EHF (Fire Resistant Rubber-Expanding, Halogen Free). When exposed to flames or to temperatures above 200 °C the rubber within the caps expands vigorously. As a result it will in a very short time seal off the opeing left by the softened or combusted plastic pipe. The expanded rubber possesses good thermal insulation properties, ensuring that the softened pipe will re-harden after compression.

For A60 class bulkhead penetrations a minimum number of components is needed. Two crusher collars and two gaskets are enough for a fire safe penetration. For deck penetrations a crusher collar and gasket, combined with a CSD sealing plug fulfil the requirements for a A60 class penetration.

The Crusher Plug is a new plug for the fire-resistant ducting of plastic pipes (PVC, ABS, HDPE, PP up to 160 mm OD). The plug can be used to duct pipes through decks and bulkheads on board ships and through walls and ceiling in buildings.

Where plastic pipes are ducted as part of sanitation systems, for example, they pose a serious source of problems in the event of fire. At a temperature of about 75 °C the plastic softens, and spontaneous ignition occurs at about 140 °C. This allows the fire to spread via the resultant opening in the deck/bulkhead or wall/ceiling, as the case may be.

The Crusher Plug provides a solution for this problem. The plug is based on a newly developed rubber type FRR-E (Fire Resistant Rubber-Expanding). When exposed to flames or to temperatures above 200 °C the rubber expands to over ten times its original volume, and as a result totally compresses even aluminium pipes. Consequently the conduit opening which carries the pipe is totally closed and the fire is prevented from spreading any further.

The Crusher Plug consists of two parts, and the seal is formed by pushing both parts of the plug into the space between the ducted pipe and wall of the conduit opening. This means not only that the plug is extremely simple to install but also that installation can be done after the pipe has been laid. Besides being fire resistant, the CE certificated CSD sealing plugs are also gas and water tight. Recently the CSD Crusher Plugs were successfully fire tested to IMO resolution A.754(18) by the Warrington Fire Research Institute in England.

When the Crusher Plug is employed for PVC or HDPE pipes, the conduit opening should be partly filled with FRR/EHF (Fire Resistant Rubber / Expanding, Halogen Free) rubber strips, which are wrapped around the pipe. This extra precautionary measure is needed because PVC and HDPE ignite extremely rapidly. The FRR/EHF rubber strips expand even more rapidly, so that the opening created by the softened or combusted pipe is closed in a very short time. When the Crusher Plug is subsequently exposed to the fire, it will expand and totally compress the remainder of the PVC or HDPE pipe.

CSD sealing plugs are used for sealing single and multi pipe penetrations for steel, stainless steel, copper and GRP pipes as well as for PVC and PE/aluminium flexible pipes. The plugs are based on a proven technology and possess a sealing power of 2,5 bar excess pressure at the rear of the plug. Considerably higher excess pressures on the flanged side have been measured in pressure tests. CSD sealing plugs are CE certificated according to the European Directive 96/98 EC for marine equipment.

CSD sealing plugs for single pipe penetrations consist of two identical parts, which enables installation after pipes have been ducted. The sealing of the penetration is realised by pushing the two parts of the CSD plug in the remaining space between the ducted pipe and the side of the penetration opening. This extremely simple method provides a seal which -depending on the rubber grade- is either gas and water tight only or fire resistant as well. CSD plugs are available in six different rubber grades in order to cater for a wide variety of applications.

CSD sealing plugs for two, three of five pipes with identical diameter consist of two, three or four identical parts. Here also the sealing of the penetration is realised by pushing the several parts of the CSD plug in the remaining space between the ducted pipes and the side of the penetration opening.

The identical parts of the CSD plugs are serrated on the outside and ridged on the inside. The flanged edge of the sealing plug makes it impossible to push the plug too deep in de penetration opening.