Abstract: A device for securing ostomy pouches over abdominal stomas. An intermediary flange (preferably plastic), with a central, circular aperture, is interposed between an optionally adhesive wafer and an ostomy pouch. Surrounding the circular aperture on the front of the flange is a single ridge adapter that interlocks with the ostomy pouch's double ridge adapter. Surrounding the circular aperture on the back of the flange is a double ridge adapter that interlocks with the wafer's single ridge adapter. A variation includes a flange (preferably plastic) with a central, circular aperture slightly larger than the outer ridge of the double ridge adapter, through which aperture the wafer and ostomy pouch interlock. An ostomy belt may be attached to attachment structures on the plastic flange to secure the optionally adhesive wafer to the body with the aperture over the stoma.