Stainless steel 304 for resistance to corrosion and high temperatures. Attaches to a fitting to help provide a leak-resistant seal on a tube or hose. Ferrule fitting for providing a seal when compressed between two mating components. Made with high quality 304 Stainless Steel, durable. The maximum operating temperature is 760° C. Due to Stress and Intergranular Corrosion, its continuous service temperature is limited to 420° C.