[TowerTalk] Using Noalox on aluminum boxes

[Pete Smith]

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