sisäputkesta

Sisäputki refers to an inner tube, a component commonly found in pneumatic tires for vehicles such as bicycles, motorcycles, and cars. It is an inflatable rubber or synthetic rubber ring that fits inside the tire casing and is filled with air to provide cushioning and support. The outer tire itself is essentially a protective cover for the sisäputki and the rim of the wheel.

The primary function of the sisäputki is to maintain the tire's shape and pressure, which is crucial for a smooth ride, efficient handling, and safe operation. When inflated, the air inside the sisäputki exerts outward pressure, pushing against the tire walls and the rim. This pressure supports the weight of the vehicle and its occupants.

Sisäputket are typically made from butyl rubber or latex. Butyl rubber is more common due to its excellent air retention properties, meaning it loses air slowly. Latex, while lighter and more flexible, is less common for general use as it tends to lose air more quickly.

Common issues with sisäputki include punctures, which cause a rapid loss of air. Punctures can be caused by sharp objects like nails or glass. When a sisäputki is damaged, it often needs to be repaired or replaced. Repair typically involves patching the hole with a rubber patch and adhesive. Replacement is necessary if the damage is too extensive or if the sisäputki is old and brittle. The size of the sisäputki must correspond to the size of the tire and rim to ensure a proper fit.