The ORING-1.489-PARKER-2-29 is a circular O-ring designed to function as a sealing component for connectors. This O-ring is part of the Cannon FIREWALL/F series and is specifically intended for use within the MIL-DTL-5015 Firewall product line. The part number designation indicates its specific size and standard. It is used to provide an environmental seal in ruggedized circular connectors, particularly in applications that require firewall-rated performance.