Split packing ring segment for a brush seal insert in a rotary machine

For use in a machine having a component rotatable about an axis, a packing ring comprising:

• a plurality of packing ring segments for positioning about said axis, each said segment having an arcuate seal face in opposition to the rotatable component and at least a first arcuate flange extending in an axial direction for cooperation with a support in the machine to retain said segment, each said segment including a first component having a first surface and a second component having a second surface;
• a generally T-shaped arcuate slot in said segment, said slot having an axially enlarged base and opening in a generally radial direction away from said base and toward said axis, said slot defined by said first and second surfaces, said first and second surfaces being axially opposed and spaced apart;
• a brush seal insert having a base element and a plurality of bristles extending from said base element, said base element securing the bristles in said insert, said insert disposed in said T-shaped slot with said base element received in said axially enlarged base, said bristles extending between said first and second surfaces, said bristles abutting said first surface and spaced apart from said second surface;
• and
• means for securing said first and second components together, with said bristles between said first and second surfaces.