Windscreen and B post Cap goop?

["S Twigg" <seanan@crosslink.net>]

Everyone,
        I was wondering what exactly was/is the goop that is placed
under the windscreen and B posts caps on a Spitfire.  I removed both to
do some minor rust repairs and found a caulk like substance there.  I
haven't checked my manuals yet but is this Seelastik (sp)?  Is there an
appropriate substitute, like plumbers putty, or am I altogether wrong?

Thanks,
Sean
'80 Spitfire

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