X-rings are comparable with the O-ring in their handling and use. For example, they are used for the radial and axial sealing of flanges, sleeves and covers (static application) and for sealing pistons and rod seals, rotating shafts and helical movements (dynamic). X-rings are used primarily for dynamic applications, as they require less pretensioning than O-rings and therefore give rise to less abrasion. They are very often used for quasi-static applications, such as adjustment and swivelling movements. They are also used for modern roller chains, such as motor bike chains, for example.