Nullifire FP302 Intustrap is a rubber-based product with graphite impregnation that creates an extremely flexible pipe closure device. The product remains dormant, until exposed to fire conditions, at which point it will expand to fill the space left by the melting combustible element. FP302 has a release tape on one side. This permits the thermal expansion of services, if required, and eases its application, allowing the product to slide freely along the pipe to its end location. Recommended areas of use Use around combustible pipes, insulated non-combustible pipes, and conduits (filled or empty) . Suitable for a range of combustible elements, up to a maximum diameter of 160mm in floors and 110mm in walls. FP302 is required to be restrained within a suitable tested substrate or included within other Nullifire tested system solutions. These include but are not limited to: Rigid walls and floors, FB750 Intubatt and FR320 Intucompound. Features Up to 4 hours fire resistance tested to B