Fitting sealed gear cables

Can anyone tell me if it's possible to fit a good ridge cable kit as a sealed unit from shifter to derailer as I have read that a few people have done it and it lasts a bit longer done this way. Is it possible and how do I go about doing it as I am a newbie to MTB.
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+ some other bikes.
+ some other bikes.
You the pic as cant upload it from phone ?
+ some other bikes.
photo (2) by shouldknowbettor, on Flickr
And
photo (1) by shouldknowbettor, on Flickr
+ some other bikes.
+ some other bikes.
I hashed up the first liner though so only got one sorted. Was only having issues with the rear so it didn't really matter.
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