Environmentally Sealed In-Line Junctions Amphenol Air LB Environmentally Sealed In-Line Junctions are compact, cylindrical plug and receptacle housings lock firmly together with a simple 'twist and pull' or 'squeeze and pull' motion. The connectors are designed to meet MIL-T-81714 criteria and feature an environmental sealing that meets EIA-364D-03B to 12,000 ft. The in-line junctions are available in 1- or 3-pin.