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Convex-it Natura Durahesive Flexible White Skin Barrier 1-3/4" (45mm), Pre-cut | cv-413177
Pre-Cut Convex Barrier 13mm — Natura® Durahesive® Convex-IT®
The ConvaTec Natura® Durahesive® Convex-IT® skin barrier, manufacturer reference 413177, is an ultra-flat convex barrier with a pre-cut opening, designed for stomas requiring light convex support. Its white acrylic tape collar provides additional adhesion, and its Durahesive® technology ensures a secure seal suited to liquid output.
Key Features
- Pre-cut opening at 13mm (1/2in)
- Integrated Convex-IT® convexity, ultra-flat
- Coupling: 45mm (1 3/4in), compatible with Natura® and Natura+® pouches
- White acrylic adhesive tape collar, for additional adhesion at the perimeter
- Durahesive® technology: swells slightly on contact with liquid output for a watertight, secure seal
- Barrier size: 11.5cm x 11.5cm (approx. 4.5in x 4.5in)
- Box of 10
Technical Specifications
| Manufacturer | ConvaTec |
| Brand | Natura® Durahesive® Convex-IT® |
| Manufacturer reference | 413177 |
| Stomo Médical SKU | CV-413177 |
| Type | Two-piece skin barrier, convex, pre-cut |
| Pre-cut opening | 13mm (1/2in) |
| Coupling | 45mm (1 3/4in) |
| Collar colour | White |
| Collar type | Acrylic adhesive tape |
| Barrier size | 11.5cm x 11.5cm (4.5in x 4.5in) |
| Compatibility | Natura® and Natura+® pouches |
| Quantity | Box of 10 |
Other pre-cut openings available in the same Convex-IT® range (45mm coupling): 16mm (ref. 413178), 19mm (ref. 413179), 22mm (ref. 413180), 25mm (ref. 413181), 28mm (ref. 413182), 32mm (ref. 413183), and 35mm (ref. 413184).
Larger sizes, with 57mm coupling, are also available: 38mm (ref. 413185), 41mm (ref. 413186), 45mm (ref. 413187), and 50mm (ref. 413188).
Indications for Use
This Convex-IT® pre-cut convex barrier is intended for people with an ostomy whose stoma requires light convex support, with an opening measuring precisely 13mm — a size often used for young stomas still in the process of shrinking, or for small, stable stomas. Its ultra-flat design allows for better discretion under clothing while providing the convex support needed to maintain a good seal.
Frequently Asked Questions
Is this barrier suitable for a stoma that isn't exactly 13mm?
This barrier is pre-cut precisely at 13mm and cannot be adjusted. If your stoma has a different diameter, other pre-cut sizes are available in the same range, from 13mm to 50mm.
What's the difference between this barrier and a cut-to-fit version?
A pre-cut barrier offers a fixed, precise opening, ideal when stoma size is stable, while a cut-to-fit version allows the opening to be adjusted at home as needed.
Is this barrier compatible with all Natura® pouches?
Yes, as long as the pouch has a 45mm (1 3/4in) coupling compatible with the Natura® and Natura+® ranges.


