A packer assembly with an enhanced sealing layer is provided. Herein, a cutting edge of the cutter blade passes by a joining interface between the supporting adhesive tape and a ring frame without penetrating through an adhesive layer of the supporting adhesive tape. The wheel defines a wheel axis and includes a generally centrally located wheel mounting portion and an outer annular portion which defines a wheel disc outer flange The wheel disc outer annular flange is segmented around a circumference thereof and includes at least a first plurality of segments and a second plurality of segments.