Adapt Barrier Rings by Hollister Adapt Convex Barrier Rings can be used to help prevent ostomy output from getting under the pouch seal. They can be cut or stacked together to improve the fit of a pouching system and are available in round and oval shapes to accommodate a variety of stomas. Adapt convex barrier rings can be used to create round or oval convexity, deep convexity when applied to a convex barrier or flexible convexity when applied to a flat barrier. Features Available in round and oval shapes Flextend skin barrier, convex Not made with natural rubber latex