Understand IP67 Connector Rating for Waterproof Fiber Patch Cables

Updated on Nov 18, 2021 by

It’s known to us that the concentration of water moisture in fiber connectors will lead to glass damage and severely affect the performance of optical cables. To prevent fiber from being contaminated by water is a critical concern in outdoor cabling. Luckily, with the advent of the IP67 waterproof fiber connector, excellent water protection can be offered to fiber patch cables.

Basics of IP67 Waterproof Fiber Patch Cables

For IP67 waterproof fiber patch cable, the “IP” here is the abbreviation of “Ingress Protection”. And IP67 is actually a code of IP rating system, which classifies the degree of protection that a product can provide against intrusion, dust, water, accidental contacts, etc. The first number after IP is used to describe the protection level of a solid object, while the second number after IP provides certification for water resistance.

From the above chart, we can see that the larger the number is, the stronger protection can be provided. In the case of IP67 connector, the 6 means that the connectors can provide the highest level of protection against dust. The 7 indicates that the waterproof connector will prevent ingress when the enclosure is immersed in one meter of water for 30 minutes.

Advantages of IP67 Waterproof Fiber Connector of Patch Cables When it comes to the benefits that IP67 waterproof fiber connector has brought, waterproof and durable may crop up in our minds first. They offer a quick, simple and robust connection for fiber assemblies including fiber patch cords in harsh environments. The main advantages are summarized as follows:

  • Waterproof for harsh industrial or outdoor environments.

  • Simply slide on the waterproof cable gland to a cable for each end that needs waterproof protection, and terminate the cable using a fiber optic connectors like LC and SC.

  • Quick-release quarter-turn bayonet locking to panel mount connector.

  • High current carrying capability.

  • Cable to cable and cable to receptacle connection.

  • Protective cap with tether available.

IP67 Waterproof Fiber Assemblies

IP67 waterproof fiber patch cables and IP67 fiber optic adapters are reliable and cost-effective solutions for cabling in harsh environments. To provide robust protection for fiber links, the designs of IP67 waterproof fiber patch cables and adapters are different from the standard ones, especially around the contact interfaces. The following picture shows the structures of an IP67 LC fiber cable and an IP67 LC fiber adapter.

Figure 1: IP67 LC-LC Fiber Patch Cable

                                                                              Figure 1: IP67 LC-LC Fiber Patch Cable

IP67 LC-LC/SC-SC Fiber Patch Cable

IP67 LC to LC single mode waterproof fiber patch cables are designed to fit for outdoor applications. There are two types of IP67 LC waterproof connector: IP67 plug and IP67 socket. The plug of one cable and the socket of the other cable can be connected to extend the cable length. These LC-LC IP67 waterproof fiber patch cables will not get damage even stepped, and are anti-rodents, and suit to use in a harsh environment.

IP67 MTP-MTP Fiber Patch Cable

Similar to IP67 LC-LC fiber patch cables, IP67 MTP or MPO fiber patch cables can also be divided into socket and plug, which has an extremely rugged, protective rubber coating with integral anti-kink strain-relief boot and a rubber-coated metal latching cap, attached by a steel lanyard. These multi-fiber MTP single-mode IP67 waterproof fiber patch cables are typically compliant with IEC standard for outdoor waterproof conditions, harsh environments, and FTTH and FTTA applications.

IP67 Fiber Connector/Adapter

IP67 LC and MPO bulkhead adapters/connectors are designed to provide a cable to cable, or cable to equipment fiber optic connection. The adapter or connector meets IP67 environmental sealing ratings and is the ideal choice for a low-cost and easy-to-use solution in industrial, FTTA, or any other harsh environmental applications. The dust cap is always suggested to be used when not mated to an outlet in your ruggedized cabling system, in order to protect ruggedized patch cords from exposure to elements or accidental damage when not mated to an outlet in your ruggedized cabling system.

Besides, FS recently introduced two new IP67 fiber connectors, namely Rosenberger Q-RMC Connector and NEX10-FO Connector. The Q-RMC and NEX10-FO series features rugged and durable metal connectors, so these industrial connectors can be applied to industrial sites, minefields, 5G base stations and so on. Click here to know more about different fiber connector types.

Figure2: Rosenberger Q-RMC and NEX10-FO Connector

                                                                  Figure2: Rosenberger Q-RMC and NEX10-FO Connector


To protect fiber links in places where dust and liquid are great challenges, IP67 waterproof equipment like IP67 waterproof fiber patch cables and fiber connectors can be your ideal choice. Designed with a strong PU jacket and armored structure, these IP67 waterproof fiber patch cables and adapters can offer high-temperature stability and low insertion loss. In some professional suppliers like FS, the length, fiber count, and connectors can all be customized according to customers’ requirements.


IP65, IP66, IP67, IP 68 ratings: what's the difference?

IP(Ingress protection) stands for the level of water protection for equipment enclosures.

The first number offers a scale of 0–6 and relates to the protection levels against solids like dirt, sand, dust, and debris. A “6” means the enclosures are dust-tight. It is the highest of the solid particle protection standards. While the second number (0–8) represents protection against liquids like moisture and water. The higher the number, the greater the protection against solids and liquids. Summarized, each rating is as follows:

  • IP65: protect against multi-directional, low-pressure water jets and must withstand water projected by a 0.25-inch nozzle

  • IP66: protect against multi-directional, high-pressure water jets and must withstand water projected from 0.50-inch nozzle

  • IP67: protect from water immersion between 5.9 inches and 39.37 inches and water in harmful quantity shall not be possible

  • IP68: resist submersion of at least 1 meter and up to 30 minutes

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