Stenso - Hovedkatalog 2019

Materials Hardness Shore A Temperature °C Standard material and relevant application N70 70 + 5 -30 - +130 Standardmaterial in pneumatic and hydraulic N80 80 + 5 -30 - +130 Resistant to mineral oils, native and animal origin, water up to plus 70 ° C, flame resistant fluids - HFA (oil in water- emulsion) - HFB (water in Oil-emulsion) - HFC (aqueous solution of polyalkylene glycol) E80 80 + 5 -50 - +150 Outstanding resistance to atmospheric effective substances, hot water steam up to 150° C. Good resistane to ozone, phosphate ester bases and brake fluids Not resistant to petroleum production. F75 75 + 5 -30 - +240 For static and dynamic sealing in combination with aliphatic and aromatic hydrocarbons, except entones and ozone at higher temperature. A multitude of other mixtures are available for special purpose applications. X-ring materials / Main types Due to the wide range of synthetic elastomers that are available on the market, X-ring material can be made to withstand temperatures from minus 50° C up to plus 240 C. to serve a wide range on fluid environments. Nevertheless all combinations of material do not behave alike. Therefore, we include a table to provide an overview of standard materials and the proper diameter data with reference to relevant applications. It is not unusual to develop non standard material to cater for the influence of some factors that might affect conditions of use. ° Surface finish: < 2 Mpa (20 bar) < 7 Mpa (70 bar) < 10 Mpa (100 bar) < 10 Mpa (100 bar) < 35 Mpa (350 bar) Pressure min.70 shore A min.70 shore A min.70 shore A+back-up ring min.70 shore A min.70 shore A+back-up ring X-ring-Hardness H8/f7 H8/f7 H8/f7 H7/g6 H7/g6 Tolerances Applications radial dynamic rotary radial static axial static Surface Rod/Housing bore groove diameter groove flank Rod/Housing bore groove diameter groove flank Pulsatic pressure Rod/Housing bore groove diameter groove flank R max 1,0-2,5 <10,00 <10,00 <10,00 <16,00 <16,00 <6,30 <10,00 <10,00 R Z 0,63-1,60 <6,30 <6,30 <6,30 <10,00 <10,00 <4,00 <6,30 <6,30 μm Ra μm 0,10-0,40 <1,60 <1,60 <1,60 <1,60 <3,20 <0,80 <1,60 <1,60 Fit Tolerances for static and dynamic applications: XR X-ring 255 μm