Of greater concern is the moisture which might/WILL be trapped inside.
If you can find some silica-gel pacs, put them inside BEFORE you do
any 'sealing.'
Don
N8DE
Quoting Pete Smith <n4zr@contesting.com>:
> Is it considered good practice or unnecessary lily-gilding to use Noalox on
> the joints of minibox-style unpainted aluminum boxes that are used for
> housing antenna switching relays and similar hardware in an SO2R
> system? Does it offer any improvement in shielding at HF, or are the
> cracks small enough and the electrical contact offered by the 4
> self-tapping screws on each box sufficient to prevent any
> significant leakage?
>
> 73, Pete N4ZR
>
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