Sealing technology manual for the process industry

1,5 1,0 0,5 0 Aggregate state of the medium static dynamic Mean roughness value R a of the sealing surface RECOMMENDATIONS FOR SEALING SURFACES HYDROGEN, WATER STEAM, AIR SAE 10 TO 50 MOTOR OILS, WATER, GREASE BITUMEN, DUST, POWDER gaseous liquid solid THE ADVANTAGES AT A GLANCE • Universal media resistance • Broad temperature range • Highly dependable • Resistant to aging • No stick-slip effect • Special variants for higher pressures • Special hygienic variants with minimal dead space DESIGN NOTES Pressures • Maximum permissible pressure for dynamic applications: 45 MPa • Maximum permissible pressure for static appli- cations: 120 MPa • For 25 MPa or more, please consult Freudenberg, if necessary use backup rings Lead-in chamfers 20° standard Surface roughness Sealing surfaces in accordance with the diagram • Lead-in chamfers <1.6 µm • Groove flanks <2.5 µm Hardness • Optimal running surface hardness 20 HRC to 65 HRC • Penetration depth min. 300 µm Product portfolio 90

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