spännring

A spännring is a type of fastener, often used in construction and engineering, to secure components or to create tension. The term is Swedish, directly translating to "tension ring" or "clamping ring." Spännringar are typically circular or ring-shaped and are designed to exert pressure when tightened. This pressure can be achieved through various mechanisms, such as a screw thread, a cam action, or a wedging effect.

The design of a spännring varies depending on its intended application. Some are simple, solid rings that are forced over another object, relying on the elasticity of the ring or the object to create a secure fit. Others are split or hinged, allowing them to be opened and closed around the component they are securing. Many spännringar incorporate a tightening element, like a bolt or screw, which allows for precise control over the applied pressure.

Applications for spännringar are diverse. They can be found in plumbing to seal pipe joints, in automotive systems to secure hoses or exhaust components, and in various mechanical assemblies to hold parts together. Their effectiveness lies in their ability to create a strong, reliable, and often adjustable clamping force. The materials used in their construction range from metals like steel and aluminum to plastics, depending on the required strength and environmental conditions.