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Convex inserts and accessories in Canada — shop disposable convex inserts and support rings designed to add convexity to compatible flat barriers. Convex inserts help improve the seal around stomas that sit at or below skin level, without requiring a full convex barrier.
Who are convex inserts for? If your stoma is flush with the skin, slightly retracted, or sits in a skin fold or crease, adding a convex insert to your existing flat barrier can help push the peristomal skin down and create a better seal. They're commonly used with ConvaTec Natura 2-piece systems and compatible Hollister products. If you need built-in convexity, see our pre-cut or cut-to-fit barriers — many are available in convex profiles.
What to look for: Match the convex insert's flange size to your existing barrier's coupling size. Confirm the stoma opening size fits your measurement. Convex inserts are disposable and designed to be replaced with each barrier change.
Available from ConvaTec and Hollister — all shipped within Canada. Free shipping on orders over $150.
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Convex Inserts FAQ
What is a convex insert?
A convex insert is a disposable accessory that snaps into a compatible flat barrier to add convexity — a gentle outward curve that presses the peristomal skin down around the stoma. This helps create a better seal for stomas that are flush, retracted, or surrounded by uneven skin.
When would I need a convex insert instead of a convex barrier?
A convex insert lets you add convexity only when you need it, while keeping your regular flat barrier for everyday use. A full convex barrier has convexity built in permanently. Inserts are a good option if you only need convexity sometimes or want to try convexity before committing to a convex barrier.
How do I know which size convex insert to order?
Match the flange size of the insert to the coupling size of your existing barrier (for example, 38mm, 45mm, or 57mm). Then confirm the stoma opening size fits your stoma measurement. Check your current barrier packaging for the flange size if you're unsure.
What is a CeraRing?
The CeraRing is a slim support ring from Hollister designed to add gentle convexity to compatible barriers. It provides light pressure around the stoma to help improve the barrier seal, particularly for stomas that are flush with or slightly below the skin surface.
Are convex inserts reusable?
Most convex inserts are designed for single use and should be replaced each time you change your barrier. Always follow the manufacturer's instructions for your specific product regarding replacement frequency and proper disposal.
