206304-1 is a rubber boot sealing accessory designed for use with AMP circular plastic connectors to provide environmental protection for jacketed cable connections. This boot is compatible with shell size 11 connectors and accommodates cable diameters in the sealing range of 0.219 to 0.438 inches (5.56 to 11.13 mm). Key dimensions include A: 0.750 inches (19.05 mm), B: 0.300 inches (7.62 mm), C: 0.600 inches (15.24 mm), and D: 0.170 inches (4.32 mm). The rubber boot can be used on plugs or receptacles, except for Series 2 connectors, and is RoHS compliant. This accessory is ideal for applications requiring environmentally sealed wire-to-connector systems in commercial signal and power applications.