TE Connectivity HDSCS MCP 2.8 Receptacle Contacts with Single Wire Sealing System (SWS) MCP 2.8 receptacle timer contacts with a single wire sealing system (SWS). These MCP 2.8 receptacle timer contacts are made from copper nickel silicon (CuNiSi) with a stainless steel top spring and have a mating interface area of 2.79 x 0.81mm. As well as being used in the MCP 2.8 automotive connector system these receptacle contacts can also be used within the Standard Timer connector system. Stock numbers 718-0819, 718-1143, 720-2433, 726-8981 and 726-8988 can also be used within the heavy duty sealed connector series (HDSCS) connector system. For suitable wire seals see stock number 395-7599 typically.