Abstract: An enterostomy appliance which can be easily and rapidly applied and removed and which is capable of achieving a high quality, completely reliable, fluid-tight seal with the wearer's skin. The appliance does not require adhesive or other sealing medium to effect the seal with the wearer's skin. Also, the appliance is nonirritating to the skin and can be quickly manipulated away from the skin to release flatus without removing clothing. The appliance includes a pouch or bag for receiving discharge from the stoma, an elastomeric sealing ring with a specially constructed sealing surface for establishing the fluid-tight seal with the skin in the area immediately surrounding the stoma, an assembly base for carrying the pouch and sealing ring, and an adjustable elastic belt for encircling the torso and maintaining the pouch, sealing ring and assembly base in proper position on the wearer's body.