[. . . ] Expansion of the intumescent material during a fire acts to close the plastic pipe. [. . . ] This allows the fastening points to be made to suit the space available in each case. Only when fastened properly can CP 642 protect against fire passing through. TE 5) or, depending on base material, fasten using Hilti power actuated tool (e. g. DXA 40). - To secure the CP 642 firestop collar, use Hilti anchors/fasteners. For maintenance reasons, a penetration seal could be permanently marked with an identification plate. In such a case mark the identification plate and fasten it in a visible position next to the seal. [. . . ] Storage · Store only in the original packaging in a location protected from moisture. [. . . ]