The 10-101949-018 is a mounting flange gasket designed for Amphenol PT and PC series miniature cylindrical connectors. This gasket provides critical sealing and positioning functionality for shell size 18 connectors, with inner diameter (R) of 1.063 inches and outer diameter (S) of 1.312 inches. The gasket features a thickness (T) of 0.024 inches and a flange diameter (F) of 1.125 inches, ensuring proper alignment and environmental protection. These gaskets are commonly used in aerospace, military, and industrial applications where reliable connector sealing and mechanical stability are essential for maintaining system integrity.