Sealing technology manual for the process industry

O-rings for aseptic clamp connections In order to ensure that Hygienic Design requirements are met, clamp seals with aseptic O-rings compliant with DIN 11864 were developed. They optimally combine the advan- tages of easy installation and a sealing area free of dead space. Aseptic O-rings are available in stock in specialized high-performance materials with various approvals. Dimensions • Series A:nominal dimensions from DN 10 to DN 100 • Series B:nominal dimensions from DN 13.5 to DN 114.3 • Series C:nominal dimensions from 1/2‘‘ to 4“ Flat gaskets Another option to seal a pipe joint is a flat gasket. It is in- serted between two flat flanges, which are connected to each other by screws. With the help of such flanges, differ- ent system elements, such as valves, fittings, pipelines, pumps etc. are added together. The sealing material should offset and seal the macro unevenness of the flanges well, on the one hand, and be resistant to the media flowing in the pipes on the other. An almost inert material is needed both in the food (e.g. detergent concentrates) as well as in the pharmaceutical and chemical industries (aggressive sol- vents and chemicals). Freudenberg offers a range of flat gas- ket materials with excellent chemical resistance to suit any application. Flat gaskets primarily provide the static sealing of two sealing surfaces. A flat gasket, on which a compacting pressure greater than the internal pressure is applied, is used to create a secure seal. Freudenberg‘s flat gasket portfolio covers all these re- quirements and also enjoys market-specific approvals. There is a choice of gaskets of the following three material classes according to DIN 28091. Aseptic clamp seal NAME PANEL FORMAT IN MM THICKNESS IN MM FG-120 1,500 x 1,500 0.5 0.8 2,000 x 1,500 1.0 1.5 2.0 3.0 FG-180 1,200 x 1,200 1.0 1,500 x 1,500 1.0 1.5 2.0 3.0 FG-360 1,500 x 1,500 0.5 1.5 3.0 6.0 Product portfolio 72 FG-1201,500 x 1,500 FG-1801,200 x 1,2001.0 FG-3601,500 x 1,500

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