Stenso - Hovedkatalog 2019

Guide Ring - PartA Material: POM Constructive and practical design enables proper distribution of transverse forces. Relief grooves ensure short response time of the seal in case of rapid load variations. Special material ensures high resistance to compression at variable thermic condi- tions. A is a very safe seal for the heaviest of applications. It is specially used in mobile cranes and feed cylinders (Mining engineering). A special design of this seal is also finds use in unsplit pistons. Sealing Ring - Part B Material: NBR Robust sealing ring from special wear resistant NBR is characterized by low comp ression set and high tensile strength. Axial length to radial width ratio is chosen so that it is no longer possible to turn the NBR sealing in the groove. The three sealing lips on the dynamic side ensure optimal sealability and low frictional force even when highest pressures occur. In cases of long service life the cementing of the seal is avoided by the so called "lubricant reserve" and good frictional values are achieved. five part construction consisting of a wear resistant NBR sealing Support Ring - Part C Material: Hytrel Elastomer Their form of closing design with respect to slide rings and sealing components yield optimal efficiency of the multi-part piston seal. In case of an (internal) axial movement of parts themselves, displacement is not possible due to the design. Also, NBR seals are protective against dirt and the occasional diesel effect. 29 Piston Seal A