Cylinder head for an internal combustion engine with a combustion chamber and the use of a sealing sleeve to seal off a cylinder head

A cylinder head for an internal combustion engine with a combustion chamber, comprising:

• a base body with a combustion chamber wall for closing off the combustion chamber of the internal combustion engine,
• wherein the base body has a hole which penetrates the combustion chamber wall with a first opening, wherein the base body comprises an abutment section with a tapering inner contact surface;
• and
• a sealing sleeve, which has a sealing section with a tapered outer sealing surface,
• wherein the sealing sleeve and the base body are clamped together in such a way that the tapering inner contact surface and the tapered outer sealing surface are in sealing contact establishing a first seal,
• wherein at least one of the abutment section and the sealing section is at least partially plastically deformed.