How to Install an M12 IP68 Shielded Circular Connector (Crimp Termination Guide)

Author：KMYD Connectors Manufacturer TIME：2026-01-26

Correct installation of M12 circular connectors plays a critical role in ensuring stable electrical performance, effective shielding, and long-term reliability—especially in harsh industrial environments.
This guide explains the correct crimp installation process for an M12 IP68 circular connector with a metal shielded housing and spring-loaded contacts, helping installers avoid common mistakes and achieve consistent results.
M12 IP68 connector with shielding

Product Scope
This installation tutorial applies to the following KMYD products:
M12 threaded circular connectors
M12 connectors with IP68 protection
M12 circular connectors with metal shielded housing
M12 connectors with spring-loaded contact structure
These connectors are widely used in industrial automation, sensors, outdoor equipment, and environments exposed to moisture, vibration, or electromagnetic interference.

Connector Design Overview
Ingress Protection: IP68, suitable for long-term exposure to water and dust
Housing: Metal shell providing mechanical strength and EMI shielding
Contact System: Spring-loaded contacts to maintain stable electrical connection during mating
Termination Method: Crimp termination for reliable and repeatable assembly
M12 Connector Drawing

Tools Required for Installation
Cable cutter
Wire stripper
Crimping tool matched to M12 contacts
Multimeter for electrical testing

Step-by-Step Installation Procedure

Step 1: Cable Preparation
Cut the cable to the required length. Strip the outer jacket according to the connector specification. Ensure the conductor insulation and shielding braid remain intact.
Cable stripping illustration.jpg

Step 2: Pre-Assemble Connector Components
Slide the coupling nut, sealing components, and housing onto the cable in the correct order. Arrange the shielding layer properly to ensure continuous grounding and EMI protection.

Step 3: Crimp the Contacts
Strip the conductor insulation to the specified length. Fully insert the wire into the contact barrel. Use the correct crimping tool to form a secure crimp.
Cable Crimping tool.jpg

Step 4: Insert Contacts into the Insulator
Insert each crimped contact into the insulator according to the pin assignment. Push until the contact locks into position. Lightly pull the wire to confirm correct retention.
Connector contact installation.jpg

Step 5: Final Assembly and Threaded Mating
Assemble the connector housing completely. Align the keyway before mating the connector halves. Tighten the threaded coupling by hand or with an appropriate tool. Avoid excessive tightening.
M12 Cables.jpg

Common Installation Issues and How to Avoid Them

Using incorrect wire gauge
Poor crimp quality
Incomplete contact insertion
Missing or damaged sealing components
Excessive tightening of the threaded coupling

Installation Verification
After installation, it is recommended to check electrical continuity with a multimeter, inspect sealing components visually, and confirm smooth mating and unmating of the connector.

Conclusion
Correct installation of M12 IP68 shielded circular connectors ensures reliable electrical performance, effective shielding, and long service life in demanding environments. By following standardized crimp termination and assembly procedures, installers can significantly reduce installation errors and maintenance costs.

For technical support or customized M12 connector solutions, please contact KMYD.

M12 IP68 Shielded Circular Connector