Sealing technology manual for the process industry

4 ENGINEERING PLASTICS 47 Overview of engineering plastics 48 PTFE 49 ePTFE 51 POM, PA, PU, PEEK 52 5 MATERIALS RESISTANCE AND PURITY 54 Temperature and fat resistance 55 Flavoring agents 57 Cleaning process 60 Extractables 61 Hygienic design 63 Storage tests 64 6 PRODUCT PORTFOLIO 65 O-rings 66 Encapsulated O-rings 68 Seals for pipe connections 70 Diaphragms 74 Hygienic Usit rings 75 Rotary shaft seals 76 V-Seal set packings 78 Stuffing box packings 80 Precision molded parts 82 Butterfly valve seals 84 Low pressure profiles 86 Guide strips 87 PTFE bellows 88 PTFE U-packings 89 7 APPENDIX 91 List of abbreviations 92 General installation and assembly instructions 94 Legal notices 95 3

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