Stenso - Hovedkatalog 2019

Slide Ring(PartA) Slide ring part is rectangular and is provided with a stepped sealing edge on the pres- sure side. On the opposite side, the profile travels under a flat wedge. This special form of sealing profile helps to achieve a recovery effect. This means that the persis- tent oil film present on the piston rod during motion is conveyed back to the surge chamber in the course of the in-movement. Profile gaskets are manufactured from PTFE materials.Compound AF-5640 is the standard material of construction (MOC) that is used in hydraulics applications. This material is particularity superior in respect of very high abrasion resistance, inherent stability, very good shearing characteristics and very good thermal properties if the chemical resistance chooses another material. Rod seals AF-441 have been successfully used for many years in hydraulic cylinders. To optimize rod sealing, we recommend the in- corporation of two AF-441 seals followed by a single dual wiper AF-485. This seal and wiper combination affords nearly leak-free rod seal- ing even with heavily loaded hydraulic cylin- ders in demanding environments. The seal can be used in divided and un- divided profile grooves; for use in an un- divided groove, the slide ring must be carefully bent to a kidney shape. The ring is then further stretched apart through the chamfered piston rod. O-Ring (Part B) O-rings are standard sealing elements with circular cross section. Those used in the present application conform to the series of dimensions as per AS 568 A (American norms). Standard MOC for hydraulics applications is NBR, which guarantees particu- larly good resistance to hydraulic fluids. For use with sliding ring is areO-rings with hardness of 70 ShoreAto preferre. Materials Overview: O-Ring N: Acrylonitrile Butadiene Rubber - Used in general machine construction, hy- draulics, pneumatics - Resistant to mineral oil based pressure fluids, HFA-, HFB- und HFC fluids and water. F: Fluorine containing Rubbers - Used at high temperatures and aggressive sur- rounding media, resistant to mineral based and synthetic pressure fluids, aliphatic, aromatic and chlorated hydrocarbons, phosphate-ester based poorly in- flammable fluids. E: Ethylene Propylene Diene Rubbers - Used in armature and pump industry.Resistant to hot water, steam, phosphate-ester based poorly inflammable fluids but is not resistant to mineral oils. S: Silicon Rubbers. C: Chloroprene Rubbers. 127 AF-441 Rod Seal Materials Overview: AF-1012: Virgin PTFE - outstanding chemical resistance - used in chemical, foodindustry and pharmaceutical industry with light mechanical stress. AF-1022: PTFE with additive - Very good chemical resistance, outstanding shear characteristics, special purpose and intermediate stress applications. AF-4115: PTFE with Glass fibre/lubricant - high abrasion resistance and inherent stability, good chemical resistance, used in various areas of industry and intermediatestress hydraulic applications. AF-2426: PTFE with Carbon - good abrasion resistance and inherent stability, good chemical resistance, used in water and water-oil emulsions with intermediate stress. Also designed for dry runs. AF-5640: PTFE with Bronze/additive - high abrasion resistance and inherent stability, very good shear characteristics, good chemical resistance, used in intermediate to high stress hydraulics application. AF-1111: PTFE with Econol - very high abrasion resistance and inherent stability, used in hydraulics and abrasive pressure fluid applications. AF-8172: PUR - very high abrasion resistance and inherent stability, used primarily in intermediate stress hydraulics applications.