Patent ID: 8741200

Claim:
A method of making a pollution control device, said method comprising: forming a self-supporting insulating end cone comprising a single, continuous piece of non-intumescent insulating material, the insulating material comprising inorganic fibers and a binder, and the insulating end cone having a three dimensional cone shape, where said forming comprises shaping non-intumescent insulating material into the three dimensional cone shape using a mold; and disposing the insulating end cone within a gap between inner and outer end cone housings of the pollution control device, wherein the insulating end cone is dimensioned so as to fill the gap between the end cone housings, such that there is no air space between the insulating end cone and either end cone housing, the insulating end cone maintains its three dimensional cone shape under the force of gravity, when placed on a level surface prior to said disposing, and the insulating end cone exhibits a resiliency value of greater than about 35 percent when evaluated using the Resiliency Test Method.