Topic Explanation:
The initial post is about a user who found the perfect ostomy ring size, specifically the Brava rings with a 27 mm hole, and is excited to share this discovery with others.

Relevant Advice and Insights:
- Some users have to stretch the ostomy rings to fit their oval-shaped stoma, and they use Adapt cerarings containing ceramide for skin protection.
- One user suggests using a piece of pipe/tubing to create a perfect circle for the ring if the exact size is not available.
- The purpose of the ostomy rings is to seal the stoma to the barrier/wafer, and they may need to be stretched or molded to fit the stoma.
- Some users use Covatec mouldable flanges and stomahesive paste for sealing, while others rely on barrier rings for a good seal.
- Users share their wear time experiences with the ostomy rings, with varying durations from a day to 10 days.
- There's a discussion about using silicone rings for extended wear time, and a user offers to donate extra rings to those in need.