The World's Leader in Aerospace Fluid Fittings Permaswage is the technology leader in the fluid fitting industry providing proprietary and standard components, tooling, and training to all major aerospace companies globally. The former brands of Designed Metal Connections and Permaswage are now consolidated. Permaswage is headquartered in the US and operates integrated manufacturing facilities in the USA, France, and China, that are dedicated to quality, on-time delivery, and customer service.