Gastite® flexible gas piping replaces black iron pipe for natural gas and propane in residential, commercial and industrial applications. Constructed of corrugated stainless steel with a polyethylene jacket, Gastite is flexible enough to bend around corners and obstacles with ease. Our patented fitting incorporates a metal-to-metal seal with no gaskets or split rings. The exclusive Jacket-Lock™ feature captures the polyethylene jacket, providing the best corrosive-resistant, fitting-to-pipe assembly on the market.