Stop in for a cup of coffee

And not sure about these. They gave me the blue one in kit. Not even close to white one going in to manifold. And the other end just gets gasket on flange? Nothing actually seals the tube?

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I would guess the blue one is wrong for that application, if the white one is still pliable i would use it.

P.S. not sure what you are working on.. but should be able to find a video or manual somewhere