BrassCraft's ProCoat® stainless steel gas connector is engineered with added safety in mind, The proprietary polymer coating is designed to withstand prolonged exposure to harsh household chemicals, UV rays and salt. ProCoat® is applied to the corrugated stainless steel connector using advanced powder coat technology. Unlike conventional dipped or sprayed coatings, the ProCoat® coating is baked directly onto the connector surface at high-temperatures to provide a uniform coating over the entire length of the connector. The coating is applied only after the connector has been 100% leak tested, prior to nut and fitting assembly. This process results in the most complete corrosion resistance available.