Depending on the models and configurations, these fire-resistant collars and sleeves have EI 90 or EI 180 classifications.
Intended for thermoplastic tubing (PVC: polyvinyl chloride; PE: polyethylene), the purpose of these sleeves is to restore the fire-resistant properties of partitions or slabs where they are crossed by tubes.
These products consist of a metal casing containing several strips of intumescent graphite. In the event of a fire, the strips contained in the sleeve expand to close the hole created by the melting of the pipe, thus preserving the fire-resistant integrity of the wall or floor.
Surface-mounted or recessed, the sleeve is available in diameters from 40 mm to 400 mm.