coek.info_vacuum-sealing-techniques.pdf - Book review...

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Book review Vacuum Sealing Techniques, by A Roth, Pergamon Press (Oxford), 1366, XIV+ 845 pages, El2 This book is really very good indeed and covers, in detail, the many techniques used in vacuum sealing. The book is divided essentially into two parts, the first part describes basic vacuum seals discussing for example permanent seals such as welded and brazed joints, glass to glass and glass to metal seals, demountable metal to metal seals and many other types: and the second part of the book is concerned with specialised vacuum seals. These latter seals include leadthrough, mechanical, magnetic, electrical and heat actuated motion seals, valves, vacuum locks, etc. In addition to describing the properties of the seals the book discusses in detail the method of preparation of each seal. Criteria for use of individual seals are discussed and considerable tabular and diagrammatic data supplements the text. Consequently it is a straightforward task for a beginner or for an experienced worker to select the seal appropriate to his own require- ments, ie, the pressure range in which the seal is to operate, and for the ambient conditions to which the seal is to be exposed. Thus it is abundantly clear that in the ultra-high vacuum region for example, only materials which have appropriate high temperature and out- gassing properties must be used and correct emphasis is placed upon the use of metallic seals in this region. The book contains some 1,600 references to published work, many of which have appeared as

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