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Tygon tubing. Tygon is a brand name for a family of flexible polymer tubing consisting of a variety of materials to be used across a range of specialized fluid transfer requirements.[1] The specific composition of each type is a trade secret. Some variants have multiple layers of different materials.
GTAW (TIG) Gases: TIG welding shielding gases are going to be argon or helium, or a mixture of the two. But argon is the most commonly used shielding gas for TIG welding. If you want a more stable arc and good cleaning action then argon is the gas you want for TIG welding. As described above, argon is heavier than air and therefore can provide good coverage of your weld pool which will keep contaminants of your weld out.