Plug Tube Seal

A plug tube seal is assembled between the engine head cover and the plug tube. The main function of the plug tube seal is to prevent oil leakage. Simultaneously, it stops external media such as water and dust from harming the ignition coil and spark plug which are located within the plug tube.

NOK-Freudenberg has several designs of plug tube seals specified for detailed requirements. The option of bellows and an integrated spring lip allows simpler assembly of the engine head cover and a more stable sealing solution.