Can i import Nix Silver Efex presets in LRC

Can i import the Nix presets in my LRC presets to use directly when editing in LR without using the plug in.
If so, please confirm process.

Nik presets have nothing to do with LR presets.

To see what you can do now please check → Using the new LR CC plugin - #2 by StevenL

I dont seem to find anything on this ling in regards to adding nix presets to lightroom

That’s because you can’t do want you want to do. Each app works with its own format of presets and would need translating into the other’s format. In which case, if you want Lr to be able to use Nik presets, you will need to approach Adobe because it is their app that cannot accept Nik’s presets.