the back plate specifically the support 107 is radially lengthened as with the back plate 61 of the conventional brush seal 51 the lengthened support 107 engages a substantial length of the bristles 117 to limit bristle blowover in the flow direction the support 107 could be lengthened by for example welding additional material thereto since the retainer 109 is removable the present invention can either can either radially lengthen the retainer 109 similar to the support 109 or the present invention can use a replacement retainer 109 that made to length as with the side plate 57 of the conventional brush seal the proximal i e radially outer end of the retainer 109 abuts the bristles 113 the distal i e radially inner end of the retainer is laterally spaced from the bristles 113 to act as the windage cover replacement of the brush seal 101 of the present invention should be less expensive than the replacement of the conventional brush seal 51 when replacing the conventional brush seal 51 the technician removes the rivets 69 to release the retainer 67 removes the brush seal 51 including the side plate back plate and bristle packs provides a replacement brush seal with side plate back plate and bristle packs and resecures the retainer 67 when replacing the brush seal 101 of the present invention the technician only needs to remove the rivets 111 to release the retainer 109 remove the bristle ring 113 replace the bristle ring 113 and reattach the retainer 109 in essence since the side plate and back plate are engine part not part of the.