Stainless Hard Lines and VU4

[Stu71584]

I am planning to use 3/8 stainless hardlines for my trunk setup, but the tubing i ordered will not grab with the PTC fittings on my VU4 manifold. I ordered all swagelok fittings for everything else, but there isnt any way to change the fittings on the VU4 that i'm aware of. How are you guys that are running stainless getting them to seal with the VU4?

[SheaButters]

I am planning to use 3/8 stainless hardlines for my trunk setup, but the tubing i ordered will not grab with the PTC fittings on my VU4 manifold. I ordered all swagelok fittings for everything else, but there isnt any way to change the fittings on the VU4 that i'm aware of. How are you guys that are running stainless getting them to seal with the VU4?

Stainless is too hard of a metal for the PTC fittings to grab onto. You must run Aluminum hardline in order for the PTC fittings to grab the hardline