[Elecraft] Heat Sink Compound Question

[Tony]

All:

It seems that thermal compounds are not all the same and I was wondering 
which type is best to use for transceiver applications? I understand 
Elecraft uses thermal pads these days, but what type of compound was 
used prior to the switch?

Just purchased a produced called MX-5 from Arctic which is commonly used 
for CPU applications and was wondering if it can be used for HF 
transceivers, kits etc.

See: 
https://www.amazon.com/gp/product/B08T64M68V/ref=ppx_yo_dt_b_asin_title_o01_s00?ie=UTF8&th=1

Thanks,

Tony