A114020-90 is a protective cap designed for receptacle connectors in the DuraMate AHDM series of environmentally-sealed, multi-pin, heavy-duty circular connectors. This Shell Size 18 protective cap provides environmental protection for unmated receptacles, helping to maintain the sealed integrity of the connector system. The DuraMate AHDM family features silicone rubber sealing material, a flammability rating of UL94-V0, and resistance to gas, oil, mineral oil, acid bath, and basic bath fluids. This accessory is ideal for harsh-environment, off-road applications in agricultural, construction, and industrial equipment where connector protection during non-use is essential.