DEFENDER FS™ gaskets were engineered for Fire Safe, extreme, high reliability sealing and electrical isolation critical service applications. They are designed to withstand the rigorous API standard 6FB (Third Edition) test and therefore provides a solution for those who want to electrically isolate their flange while also requiring protection against the introduction of fire in and around the flange. The Defender FS Gasket is able to maintain its fire safe characteristics throughout the entirety of the test. Based on years of technological experience, the DEFENDER FS™ sealing/isolating gasket exceeds the pressure-containing capabilities in standard 6FB (Third Edition) as outlined by API. They are well suited for high reliability sealing and electrical isolation critical service applications and locations where highly volatile fluids are present.