I too use the convatech surfit moldable convex. After the ileostomy, I was using paste for approx. 4 months. 7-11 days wear time. Then, because of the weight that I had gained back, I started using the seals because now on the paste, I was getting 3/4 days. With the seals, I was initially getting 11 days, now 7 because of the weather. At the time of the seals, I also starting using a belt. Trial & error