Cap problem

hi please can some one help me to get two closed brep here image
cap (190.9 KB)

You either need someone with Pufferfish installed or you will have to provide a file without this specific component.

In general it would be good to include plugins used in the topic tags.

the problem comes from the original internalized Brep: its seams are “touching” each other, but they are not joined together:

you can use Sweep2 on the curves from your own Brep to create a surface that will generate closed solids, but keep in mind that the left Closed Brep will still be composed of a higher number of surfaces, due to the original position of the seam:

cap (194.9 KB)