Waterproof connectors

Waterproof Fiber Optic Connector

Sealing is a complex science, involving physical aspects such as mechanical design, materials & surface science, and fluid behavior.

Whether your devices and installations are exposed to rain, mud, intense water jets, salty mist, or deep-sea immersion, it’s crucial to have sealed connectivity solutions to maintain their long-term reliability.

Our waterproof connector solutions
Fischer Connectors’ worldwide reputation for sealing technology and expertise comes from the first high-quality sealed connector for industrial applications, which was developed in 1954 by   Walter Werner Fischer.

When choosing a waterproof connector, it’s important to note that not all IP68 ratings are the same. While some IP68-rated connectors may only be suitable for 1.5 meters for 30 minutes, Fischer Connectors offers some of the toughest IP68-rated waterproof connectors in the industry, tested up to 20 meters for 24 hours (or more upon request). These connectors are designed to extreme conditions in harsh environments.

Key features

  • IP68 sealing up to -20m/24h mated and unmated
  • High corrosion resistance (salt mist, sterilization, chemicals)
  • Compliance with multiple data-transfer protocols (USB 2.0, USB 3.2, Ethernet, Single Pair Ethernet, Audio/UHD Video)
  • Lightweight and compact solutions
  • Technical support and assistance

We assist and guide you in carefully selecting solutions with the appropriate level of environmental and hermetic sealing for your specific device and operating conditions. Our product tests  are conducted according to the highest standards.

Our Product Range

Waterproof Connectors


Fischer Core Series Ultra-Rugged Connectors 360° Mating Freedom High-Density Miniaturization Rugged Fiber-Optic
Core Text Ultimate Text Freedom Text Minimax Text Fiber-Optic Text
Highly configurable, the Fischer Core Series offers a great variety of waterproof connectors. Our ultra-rugged waterproof connectors are compatible with the latest military standards. Our low profile, 360° mating Freedom connector is cleanable by hand in the water. Combine water resistance with high-density miniaturization. A rugged fiber-optic solution designed for outdoor applications.
Number of contacts 1 to 55 2 to 42 4 to 7 4 to 30 1 to 4
Contact termination Solder | Crimp | PCB Solder | Crimp | PCB Solder | PCB | Wires | ZIF Solder | PCB Optical | Solder (hybrid)
Locking system Push-pull | Quick-release | Friction Quick-release | Push-pull | Ratchet Quick-release Push-pull | Quick-release | Screw Push-pull
Blind mating
Mating cycles up to 10,000 up to 10,000 up to 1,000 up to 5,000 up to 1,000
Data transfer & power
Contact type Low voltage | High voltage | Coax | Triax | Hybrid Low voltage Low voltage Low voltage Low voltage | Fiber optic
Sealing level IP30 to IP69 | Hermetic IP68 to IP69 | Hermetic IP67 to IP68 IP68 IP67 to IP68
Receptacle sealed unmated
Data protocol compliance USB 3.2 | Ethernet | Single Pair Ethernet | Audio/UHD Video USB 3.2 (MP LV or USB-C Interface) | Ethernet | Single Pair Ethernet USB 2.0 USB 3.2 | Ethernet | Single Pair Ethernet | Audio/UHD Video
Test voltage DC (kV) up to 50 up to 3.7 up to 1.2 up to 2.4 up to 2.8
Current rating (A) up to 60 up to 26 up to 5 up to 10 up to 10
Housing material Brass | Stainless steel 316 L | Aluminum | PEI (405) | PBT (4032) | ABS Aluminum | Brass Metal | Plastic Brass Brass
AWG 9 to 32 9 to 32 24 to 28 18 to 28 17 (hybrid)
Cable outer Ø (mm) 1.5 to 22.7 1.9 to 18.8 5.5 3.0 to 8.7 2.9 to 9.4
Plug size Ø (mm) 9 to 34 12 to 29 20.4 to 25.4 9.9 to 14.9 13 to 24



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