On Thu, 08 Oct 2009 17:06:55 +0100, CarlBriggs wrote:

I have been in engineering for 25 years and WD40 has been used all the
time its well known to be used in locks and any small component devices.

If you look on the site it tells you.
http://www.wd40.co.uk/index.cfm?articleid=1519

MRD.



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