The head gasket seals the cylinder head to the engine block. It is subject to tremendous pressures, and often fails if and when an engine overheats.

a Marmot exclusive: Inspired by the same-named element that seals precious oil in an engine, our Head Gasket is sewn around the hood of a sleeping bag to keep in warm air. When you pull on the hood drawstring a cushion of insulation, rather than the gathered cord, presses against your face.

See cylinder head gasket.

The seal between the cylinder head and the engine block. This gasket keeps the coolant out of the cylinders and free from contamination by exhaust gases. A "blown" head gasket causes a serious loss of compression.

An airtight seal on all of the combustion chambers in the engine, as well as the coolant and oil passages between the head and the engine block. A leak in the head gasket can cause major problems within the engine.

A head gasket is a gasket between the engine block and cylinder head in an internal combustion engine. Its purpose is to seal the cylinders to ensure maximum compression and avoid leakage of coolant or engine oil into the cylinders.