Air-Lock, Inc. is a subsidiary of David Clark Company Incorporated, specializing in the design, development, and manufacture of specialized sealed Air-Lock connectors and bearings for high-altitude aircraft pilots and astronauts. Their products have been integral components of pressure suits worn by aviation and space crews for over half a century, including those used in NASA's Gemini, Apollo, Skylab, and Shuttle missions. Air-Lock also provides hardware for life support systems, survival kits, oxygen systems, and chemical-biological protective systems. With a focus on quality and reliability, Air-Lock continues to innovate and provide environmental protection for space-walking astronauts, contributing to the advancement of human performance in hazardous environments.