Customers specifying low-circuit-count connectors for rugged harness applications in vehicles require a highly-reliable, securely sealed connection system to minimize electrical failures and prevent costly machinery downtime. This system needs to withstand high temperatures and harsh environments, including exposure to chemicals. These DT style connectors meet this need with high-performing seal technology proven to prevent ingress of fluids under extreme conditions. Advanced molded one-piece plug, and rear seals with cover guards guarantee optimum seal positioning at all times, including during mating and unmating of the pug and receptacle. The result is a cost-competitive solution that achieves superior reliability over de-facto, industry-standard systems.