The 1011-349-1205 is a thermoplastic dust cap designed for DEUTSCH DT series connectors, specifically compatible with DTO6-12S, DT16-15S, and DT16-18S plug models. This cap provides environmental sealing and protection for unmated connector plugs, shielding them from dirt, dust, and paint overspray during storage and transport. Made from durable thermoplastic material, it offers superior environmental protection compared to plastisol alternatives, making it ideal for industrial and commercial transportation applications where connectors must remain protected when not actively mated. The cap is part of TE Connectivity's comprehensive DT Family accessory lineup and is distributed exclusively through LADD Distribution.