TE Connectivity 828904-1 is a blue silicone Single Wire Seal (SWS) for use with MCP series connectors. It features a 5.2 mm cavity diameter, accepts 2.1 mm cable insulation, and operates from -40 to 130 °C.
The 963530-1 is a wire seal accessory from TE Connectivity, designed for use with MCP series connectors. It features a single position for sealing wires.