EHEDG Guidelines

During the past 30 years, EHEDG subject matter specialists have collaborated in EHEDG Working Groups to develop 50+ documents for food processing buildings, food production environments, and a wide range of food processing equipment types. 

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Doc. 25 Design of mechanical seals for hygienic and aseptic applications

Second Edition, October 2020 - This guideline concerns the design and selection of mechanical seals and seal auxiliary-systems that meet the hygienic and if specified aseptic requirements of food-applications. Requirements for design, materials, installation and operation of mechanical seals and seal auxiliary-systems are defined with respect to ease of cleaning, microbial impermeability, sterilizability and pasteurizability. The guideline is applicable for suppliers and users. 

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