Position the heat-shrinkable boot/transition over the object to be covered (connector). Heat evenly until the until the tubing or molded part shrinks into place or will shrink no further.
Keep the heat source or product moving. Do not concentrate the heat in one place. Keep the heat source at least one inch away from the product. Use a low intensity heat source (i.e. heat gun) not a torch
If charring or burning occurs, stop heating immediately.