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309LFC-O is a self shielding variety of ER309L stainless steel welding wire. It requires no shielding gas and works well when joining 309L to itself or other mild steels. To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzed reviews to verify trustworthiness.







