An O-ring is a type of mechanical gasket in the shape of a torus or doughnut-shaped ring, typically made of an elastomeric material such as rubber or silicone. The O-ring is designed to be seated in a groove and compressed between two or more parts, creating a seal to prevent the escape of liquids or gases.

In Malaysia, O-rings are widely used in various industries such as automotive, aerospace, oil and gas, and manufacturing. They are commonly used in hydraulic systems, pneumatic systems, and other fluid handling applications to ensure leak-free operation.