Gas line for Mig

[Jimbob17]

Hey guys I’m trying to get a new gas line for my Rossi mig welder because the line in there keeps splitting on the barb that it slides onto in the mig gun.
The line is 4mm OD and 2mm ID, any thoughts on the type or line I should be getting? I’ve been looking at this line

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I have tried all different places around where I live and it’s seems the line being this small is the normal size so I have to get something online.

Appreciate your thoughts

 

[Robert Weaver]

What's causing the existing gas line to keep splitting? Is the 2mm id too small, or is it brittle with age? Don't replace like for like if it's too small.
if you're replacing OEM, probably good.

 

[Jimbob17]

Yeah I’m replacing the original line that came on the machine, it was a pretty cheap welder so I would imagine it’s just a cheap line

 

[a111r]

Mercedes pneumatic pipe for the door locks is the same size, but yellow.

 

[johnik]

i used to work at a hospital, i collected a lot of old oxygen mask,s, the pipe is ideal and best of all free