AHDC04-18 is a sealed plug cap with tether designed for DuraMate™ AHDP ISOBUS 91 Series circular connectors in Shell Size 18. This protective cap features a threaded design and integrated tether attachment, providing secure sealing and convenient retention when the connector is not in use. The cap is manufactured to withstand harsh environmental conditions typical of agricultural and off-road applications that comply with ISO 11783 standards. It protects the connector contacts from contamination, moisture, and debris, extending the service life of the connector assembly in demanding industrial environments.