WD-40 is a water displacer. It was not designed to prevent rust.

"Ba r r y" wrote in message
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On Sun, 20 Nov 2005 21:59:06 GMT, "BobS" wrote:

Barry,

Yep, it's good stuff but a bit pricey as you noted. WD40 probably would
have worked as well for what you needed right then - water displacement,
which it does very well.

My experience with WD-40 is that little protection is left behind.
I've seen bicycle chains rust two days after WD-40 was applied.

The plastic wasn't airtight, it was only over the surfaces.

Barry