Abstract: A tube retainer is provided for use with a corrugated tube to permit movement of the corrugated tube through the tube retainer in only one direction. The tube retainer includes a cylindrical housing with an outer surface and a concentric opening through it. A groove is circumferentially located about the cylindrical housing. An O-ring is located in the groove. Pins are located under the O-ring in the holes which extend from the groove into the opening. Each pin has a transitional end which extends into the opening and the transitional end rides up and down on the corrugations which permits movement of the corrugated tube in only one direction. The transitional end may be beveled or contoured or have other possible configurations.