SINGLE WIRE SEAL, AC Connector Seal & Plug Type: Single Wire Seal (SWS) Primary Product Color: Gray Primary Product Material: Silicone Compatible Insulation Diameter Range: .48 – .503 in Compatible Insulation Diameter Range: 12.2 – 12.8 mm Single Wire Seal (SWS) Gray Silicone .48 – .503" | Connector Seal & Cavity Plug | Part Number: 2402051-1 | Internal Number: 2402051-1 | TE Connectivity