The 10138810-001 is a receptacle dust cap designed for the OCTIS™ Outdoor I/O System accessories family, providing protection for panel cutout areas from direct dust exposure prior to mating of plug assemblies with board connectors. Manufactured from NBR rubber material, the cap features a corrugated design with a holding grip that enables easy insertion and removal while maintaining a lightweight profile. The design ensures proper sealing of the connector interface, making it ideal for outdoor and high-reliability applications where environmental protection is critical. This accessory enhances the usability and longevity of OCTIS™ connectors by preventing dust ingress and contamination during storage and pre-installation phases.