Abstract: A cassette for use in dispensing a pleated tubing. The cassette includes an annular body having a generally U shaped housing with an open central cylindrical core. The annular body includes an inner wall, an angular wall a bottom wall and an outer wall. The annular cover has an outer wall and a ledge that extends radially inward from the outer wall and over the annular body that defines a gap between an inner edge of the ledge and the inner wall of the annular body. An inter-engagement mechanism is provided on the annular body and on opposite edges of the annular cover that cooperates to secure the cover to the body. At least one aperture is provided in the angular wall to enable ventilation of the air.