Composite-style gaskets consisting of an expanded PTFE outer layer with an encapsulated corrugated insert are an effective solution for many different challenging sealing applications.
They seal at lower applied stresses than most common sheet materials, preventing over-bolting and damage to fragile nonmetallic flanges while ensuring long-term leak-free performance in corrosive piping systems.
Jeff Wilson presents several real-world case studies demonstrating proper torque procedures and gasket selection for FRP and dual laminate flanged joints.