TE Connectivity AMPSEAL Plug Style Receptacle Housings. AMPSEAL automotive plug style receptacle housings with an IP67 rating, a 4mm centerline and mechanical and coloured keying. These AMPSEAL receptacle housings have a 2 piece contact holding design and secondary locking to prevent contact backout and accept a wire size of 0.5 to 1.25mm ;sup>2. ;/sup>. Plug connector two-piece contact holding design ensures positive seating without backout