If the center strands are made of nylon, then simply briefly burning the end with a match will seal it very nicely

With this paracord the center strands are still exposed after burning the end with a match.

A dead end.

All I need to do is burn the end little bit.

If the center strands are still exposed after burning the end with a match, then the center strands are definitely made of a material that is not nylon

It cuts clean and takes a burned end well.

Use a lighter to burn the end