Abstract: A retainer of pliable construction having a conical portion for insertion into a fistula or other body opening to provide a seal to prevent outward passage of fluids. An end segment of the retainer is cylindrical and has an annular edge which grips the tube outer wall surface to prevent tube slippage. An open internal area of the retainer permits lateral tube displacement. A modified retainer receives multiple tubes. The retainer is held in place by an adhesive equipped strip rotatably positionable for securement to the body. The strip may be apertured at its ends for reception of a belt.