The TE Connectivity 1828740-1 is a protective cap (cover) designed for an RJ45 plug that uses a circular bayonet coupling. It is a black accessory from the 1828740 base series, packaged in bulk. The cap carries an IP67 rating and includes an attached lanyard, making it suited for sealed, field-deployable Ethernet connections where the plug needs protection when unmated.
IP67 and Lanyard — What They Mean for Field Use
The IP67 rating means the cap, when installed on the mating RJ45 plug, seals against dust ingress and temporary immersion in water. This is the same sealing class used on M12 and other circular industrial connectors for washdown or outdoor environments. The lanyard keeps the cap tethered to the cable or panel so it is not lost when the plug is mated — a practical detail for field-service or equipment where the connector is frequently disconnected.
Compatibility Check — Which Connector It Fits
This cap is specified for use with an RJ45 plug that has a circular bayonet coupling. That coupling style is typical of TE's industrial RJ45 connector families — the cap threads or bayonets onto the plug body to protect the contacts. It is not a generic RJ45 dust cap; the circular bayonet interface is the key fit constraint. Confirm your RJ45 plug assembly uses that same bayonet locking ring before ordering.