gasket

This term refers to a critical sealing component designed to create a tight bond between two surfaces. It is most commonly associated with high-pressure environments, such as internal combustion engines, where it prevents the escape of oil, coolant, or combustion gases. In a broader mechanical sense, it describes flexible strips or rings made of rubber, cork, or silicone. These are used in everything from plumbing to window frames to ensure a watertight or airtight seal, often acting as a sacrificial part that wears out over time and requires replacement.