9107KN Rubber－steel Flange Gasket: Consisting of a supporting ring and a specially shaped,replaceable elastomer sealing ring for installation in non－load－bearing positions. Special features: The supporting ring (1) performs both a centring and a load－restriciting function.It absorbs the tightening forces necessary for high pressures while protecting the rubber seal from excessive compression.The supporting ring does not come into contact with the medium.Uniform distribution of stresses is guaranteed is guaranteed by the special sealing lip geometry combined with elastomer of the highest quality.The permissible contact pressures and transverse loads.which are a vital factor in soft－rubberized flanges,are not exceeded.With coated flanges we recommend selecting an outside diameter of coating that permits the sealing lip on the atmosphere side to lie within the area of the steel.If necessary,coordinate sizes with Burgmann CiXi. Note on production Up to DN 800 or 32" the sealing lips are manufactured by injection moulding.The higher dimensional accuracy achieved by injection moulding makes it superior to the frequently applied method of production by displacement with an open compression mould. >DN800 the sealing lips are extruded and their joints vulcanized to form the sizes needed for installation. Materials: sealing ring:EPDM metal supporting ring in St.37,galvanized and chromate. Other sealing and supporting ring materials available on request. Temperature resistance of EPDM some minutes:－35...＋2000C some hours:－30...＋1500C continuous operation:－30...＋1300C Sealing characteristics(N/mm2) σvu=2 σvo=10 m=1.3 Load values(σ): Elastomer gasket:the surface load with the flange in licked position is: σmax=approx.10N/mm2 at room temp. σmax=approx.6N/mm2 at 1000C Sealing face requirements Recommended surface roughness Rz=≤100μm.As a basic rule:The finer the surface,the tighter the seal. Fields of application: Flange connections with smooth sealing face as found in all sectors of industry: 1.General pipework construction 2.Apparaturs and pipes made of plastic and glass 3.Coated steel flanges e.g.with rubber. 4.Flue gas desulphurization plants with rubberized piping a