Patent ID: 7977856

Claim:
A spark plug for an internal combustion engine, comprising: a ground electrode; a center electrode; an insulator; a housing; and a folded packing situated on an outer circumference of the housing and having a hollow profile in cross section, wherein the folded packing includes a free leg directed outwards and a support region, the folded packing lying on a contact surface at the support region and the free leg being situated at an angle to the support region, the folded packing being pressed together during the mounting of the spark plug, and the free leg being configured to bend over in the direction of the contact surface during the mounting of the spark plug and provide a diameter enlargement of the folded packing, wherein the folded packing includes a crimped-over region in contact with the free leg at a side of the free leg directed towards the inside of folded packing, wherein the angle lies between the free leg and the support region in a range of 100 to 140 degrees.