Older thread, newer bump. Noticed I needed one of these after performing a diesel purge. I opted to get a 4 ply straight silicon hose, with stainless steel braid reinforcement, like the kind used for turbo intercoolers. They are sold on eBay for cheap, and come pre-cut to about 3 inches in length, which you can cut down to 2" using an angle grinder or pipe cutter.

Anyway thanks to all those providing info on this thread

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