This topic is about someone who is dealing with an enlarging, oval-shaped stoma and is considering switching from using Hollister convex wafers to flat wafers combined with Adapt CeraRing convex rings. The goal is to find a better fit and prevent leaks. Here are some insights and advice shared by others who have faced similar situations:

- The person's stoma has grown to about 2¼ inches on the long axis and is partly flush with the skin. They currently use Hollister’s largest convex wafer, which requires them to "squish" the stoma to fit, increasing the risk of leaks.

- Hollister support suggested switching to a larger flat wafer, which is available in the needed size, and adding Hollister Adapt CeraRing Convex Barrier Rings to maintain the necessary convexity.

- The person received samples and tested them, finding the thicker, tapered convex ring and lower-profile flat wafer appealing. However, they experienced a leak during a day of garage work, possibly due to a large liquid surge affecting the convex ring.

- They are considering using a "thin skin covering" or skin-prep films if the problem continues.

Here are some additional tips and insights from others:

1. Results can vary when using flat wafers with convex rings. Some people have great success, while others do not, so it may require some trial and error.

2. Hollister Adapt CeraRing Convex Rings swell when wet, which can improve the seal, especially for urostomies. They are thicker than flat rings, which might reduce the need to overstretch the material. Hollister offers free samples, so testing before purchasing is recommended.

3. Alternative ring options include:
- Hollister Protective Ring (flat) for moisture protection.
- Brava Protective Ring (Coloplast), which is moldable.
- Coloplast moldable rings, which are user-friendly and available in sizes down to 2.7 cm.

4. If the pre-cut hole in the ring is too small, you can customize it by cutting the ring into pieces, warming them, rolling them into "worms," and building your own gasket. Stretching the ring can also work.

5. If the wafer's plastic limits the hole size, switching to a larger flat wafer with a convex ring is the only option with Hollister without changing brands.

6. For managing leaks:
- Keep disposable under-pads or vinyl mattress covers on the bed to protect it.
- Change immediately after a leak to protect the skin, and consider using skin-prep films if erosion occurs.
- After placing the wafer and ring, warm and "burnish" the seal with your fingers or a Q-tip to improve adhesion.