Stenso - Hovedkatalog 2019

Materials Overview: O-Ring N: Acrylonitrile butadiene rubber - Used in general machine construction, hydraulics, pneumatics. Resistant tomineral oil based pressure fluids, HFA, HFB and 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 inflammable fluids. E: Ethylene propylene diene rubbers - Used in armature and pump industry. Resis- tant to hot water, steam, phosphate-ester based poorly inflammable fluids but is not resistant tomineral oils! S: Silicone rubbers. C: Chloroprene rubbers. 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 norm). Standard MOC for hydraulics applications is NBR with 70 Shore A, which guarantees particularly good resistance to hydraulic fluids. Wiper Ring (PartA) The wiper/scraper possesses a sturdy profile with a wiper lip protruding on atmosp- here side. There exists a radie on the outermost circumference in order to be able to fit O-ring. Wiper/scraper rings are manufactured from specially modified PTFE materials. The compounded material 5640 (PTFE bronze) is a standard material in seals (MOC) that is used in hydraulic applications. This material is superior in respect of very high abrasion resistance, inherent stability, good shear strength and very good ther- mal and chemical resistance. The wiper/scraper series AF-485 has been used for many years in hydraulic cylinders. On the basis of its double function as a seal on the inside and wiper/scraper on the outsi- de (atmosphere side), it is generally used to- gether with a piston rod seal AF-441. The sealing and wiper function allows a near- ly leakage free rod sealing, even in the case of highly loaded hydraulic cylinders and rough environments. The wiper/scraper can be used in closed and split (rod diameter approx. 30 mm on- wards) grooves. For use in closed groo- ves, the profile ring must be carefully bent to a kidney shape. AF-485 181 Double Acting Wiper 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.