Patent ID: 8646176

Claim:
A method for sheathing an electrical conductor with an elastic sealing element, comprising the steps of: producing a through-opening in the elastic sealing element; expanding the through-opening produced; introducing the electrical conductor into the expanded through-opening, comprising attaching the electrical conductor to the piercing needle; and pulling the electrical conductor with the aid of the piercing needle into the interior of the hollow needle as the piercing needle is pulled out of the hollow needle; and causing contraction of the expanded through-opening, thereby sealing the electrical conductor with the elastic sealing element, wherein the through-opening with a first equivalent diameter is produced in the sealing element by piercing the sealing element with a piercing needle, then by expanding the through-opening from the first equivalent diameter to a second equivalent diameter by passing a hollow needle having a frustoconical tip through the through-opening produced with the first equivalent diameter.