TITLE

Sealed with approval

AUTHOR(S)
Gay, Paul
PUB. DATE
December 2004
SOURCE
Engineer (00137758);12/10/2004, Vol. 293 Issue 7665, Special Section p41
SOURCE TYPE
Periodical
DOC. TYPE
Article
ABSTRACT
This article reports that a Du Pont researcher is investigating refrigerant gases who noticed a white substance that had polymerized itself on his equipment. Tests on the mysterious substance revealed some surprising properties. These included the lowest known coefficient of friction, almost complete chemical inertness and extreme temperature resistance. The substance was identified as polytetrafluoroethylene (PTFE). Since then it has found applications in everything from the Space Shuttle to non-stick frying pans, but its inert nature and low friction characteristics make it particularly well suited to sealing applications, For instance, a thin flexible PTFE jacket made resilient by an internal energising spring forms the basis of a range of sealing components recently launched by Birmingham-based Sealco.
ACCESSION #
15359377

 

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