

Convex-it Natura Durahesive Flexible White Skin Barrier 1-3/4" (45mm), Pre-cut | CV-413184
Convex Pre-Cut Skin Barrier — 35mm
ConvaTec's Natura® Durahesive® Convex-IT® skin barrier, manufacturer reference 413184, is an ultra-flat convex barrier with a pre-cut opening, designed for stomas that need gentle convex support. Its white acrylic tape collar provides extra peripheral adhesion, and Durahesive® technology creates a secure seal that responds to liquid output.
Key Features
- Pre-cut opening: 35mm (1-3/8in)
- Integrated Convex-IT® convexity, ultra-flat profile
- Coupling size: 45mm (1-3/4in), compatible with Natura® and Natura+® pouches
- White acrylic adhesive tape collar, for extra peripheral adhesion
- Durahesive® technology: swells slightly on contact with liquid output for a secure, watertight 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 | 413184 |
| Stomo Médical SKU | CV-413184 |
| Type | Two-piece skin barrier, convex, pre-cut |
| Pre-cut opening | 35mm (1-3/8in) |
| Coupling size | 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 in the same Convex-IT® range (45mm coupling): 13mm (ref. 413177), 16mm (ref. 413178), 19mm (ref. 413179), 22mm (ref. 413180), 25mm (ref. 413181), 28mm (ref. 413182) and 32mm (ref. 413183).
Larger sizes, with a 57mm coupling, are also available: 38mm (ref. 413185), 41mm (ref. 413186), 45mm (ref. 413187) and 50mm (ref. 413188).
Usage Guidance
This pre-cut Convex-IT® barrier is intended for ostomates whose stoma needs gentle convex support — for example a slightly retracted or flush stoma — with an opening matching exactly 35mm. Its ultra-flat design allows for better discretion under clothing while still providing the convex support needed to maintain a good seal.
Frequently Asked Questions
Will this barrier fit a stoma that isn't exactly 35mm?
This barrier is pre-cut precisely to 35mm 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 the stoma size is stable, while a cut-to-fit version lets you adjust the opening 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.


