1) This is not the same as the original but appears to be designed to be compressed and held by tension, not the original cover. 2) It was not possible to put it on the o-ring under the vacuum unit. 3) Packaged so poorly that it was partially crushed and if the box had been damaged a little more the filter could have fallen out. 4) I sent it back in its original packaging with enough tape to hold it together (probably!)