ConvaTec SUR-FIT Natura Two-Piece Cut-To-Fit Durahesive Skin Barrier Without Tape Collar
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ConvaTec SUR-FIT Natura Durahesive Cut-to-Fit Skin Barrier (No Tape Collar) | Convex & Flat System
The ConvaTec SUR-FIT Natura Durahesive Cut-to-Fit Skin Barrier without tape collar is a two-piece ostomy base system designed for secure adhesion and customizable stoma sizing across multiple configurations.
This version includes both convex and flat barrier geometries depending on SKU selection, allowing adjustment based on stoma shape, output behavior, and leakage risk.
KEY FEATURES
- Durahesive hydrocolloid for liquid output protection
- Cut-to-fit design for precise stoma customization
- Available in convex and flat configurations (SKU dependent)
- No tape collar for lower-profile edge flexibility
- Compatible with SUR-FIT Natura two-piece pouch system
- Multiple flange sizes from 32mm to 70mm
SKU SYSTEM (NORMALIZED MATRIX)
- SKU 413153 — 32mm (1-1/4") flange — 4" x 4"
- SKU 413154 — 38mm (1-1/2") flange — 4" x 4"
- SKU 413155 — 45mm (1-3/4") flange — 4" x 4"
- SKU 413156 — 57mm (2-1/4") flange — 4" x 4"
- SKU 413157 — 70mm (2-3/4") flange — 4" x 4"
- SKU 413161 — 70mm flange — 5" x 5" extended faceplate
Critical: All SKUs share base material technology. Differences are flange size and mechanical geometry selection (convex vs flat depending on SKU configuration).
WHEN TO USE THIS SYSTEM
- Need liquid-output resistant barrier protection (Durahesive)
- Require lower-profile system without tape collar edges
- Need cut-to-fit flexibility for irregular stoma sizing
- Experiencing leakage due to poor pre-cut sizing alignment
FIT & GEOMETRY WARNING (CRITICAL DECISION POINT)
Barrier geometry selection (convex vs flat) is the primary determinant of seal success, not adhesive strength.
Convex is required when the stoma is flush or recessed and output is undermining the wafer. Flat is used when the stoma protrudes and maintains natural separation from the skin surface.
Incorrect geometry selection is the most common cause of early leakage in SUR-FIT systems.
If unsure, confirm before ordering.
FAQ (DECISION ENGINE — FINALIZED VERSION)
How do I know if I need convex or flat?
Use convex if the stoma is level with or below skin surface or if leakage occurs at the base. Use flat if the stoma is well-protruding and output remains contained.
Why does geometry matter more than adhesive strength?
Most leakage is caused by mechanical undermining of the barrier, not adhesive failure. Geometry determines whether output is directed away or under the wafer.
What happens if I choose the wrong type?
You typically see early edge lifting, leakage under the barrier, and skin irritation even if the product is properly applied.
Why remove the tape collar?
No tape collar reduces edge rigidity and may improve comfort, but provides less perimeter reinforcement in high-movement or high-moisture conditions.
Can I mix convex and flat components?
No. The system must remain consistent within a single geometry selection to maintain proper seal mechanics.
NEED HELP SELECTING?
Correct geometry selection is critical for preventing leakage and skin damage in ostomy care.
