20130055693 | SEALING ARRANGEMENT FOR APPARATUS FOR FILTERING, AND METHODS, AND PRODUCTS FOR FILTERING - A device for filtering a gas stream, having a vessel partitioned into a first stage and a second stage, with an opening between stages. A filter element is positioned in the opening, with ends of the filter element extending into the first and second stages. The first member is removable from the second member while the filter element is positioned in the opening, to allow for replacement with a new clean member. | 03-07-2013 |