What Is Waterproof Slip Ring?

A Waterproof Slip Ring is a specialized device, specifically designed to work under moisture, corrosion, and underwater conditions. The protection grade will be IP65, IP67, and IP68, and the liquid components in the working environment such as freshwater, seawater, oil should be considered. Waterproof slip rings are widely used in ships, harbor equipment, and some water or moisture environment working conditions. The purpose of these rings is to facilitate the transmission of electrical signals, power, and various other forms of media between rotating and stationary parts.

The waterproof slip rings are encased in protective enclosures that shield the electrical slip ring from water, dust, dirt, debris, and damage. Furthermore, these kinds of slip rings are designed to have long service lives and high-performance capabilities.

Waterproof Slip Rings - FH Series

Available for Custom, Protective Grade IP 68

Slip rings of the FH series are specially designed for IP68 water-proof and dust-proof slip rings. Grand applies noble precious metal reduced noises and interference between circuits, low friction torque assures long life-span. Available in a wide range of sizes and models starting from 22mm up to over 100mm dimension.

Although GRAND offers modularized & standardized designs for various application solutions as an original slip ring manufacturer. To create your most suitable waterproof slip ring connector, please feel free to contact us.


◆ Waterproof slip ring, IP68, can work underwater of 1500M deep ocean, mainly applied to ships and oil wells

◆ Multi-point brush contact material ensure long life

◆ Anti-corrosion stainless steel housing for better protection

◆ Integrated structure design for easy installation

◆ Standard model and customization are available

◆ Standard model supports 1-96 rings power or signal(0~20A/ring)

◆ Free maintenance


◆ No. of rings

◆ Current &voltage

◆ Connector

◆ Housing material

◆ Position of wire outlet, wire length

◆ Flange mounting is optional

◆ Operating temperature

◆ Support mixed high speed data transmission(including Ethernet, USB, Profibus, Ethernet, CANOPEN, CANBUS, RS232, RS485, etc.)

◆ Fluidic rotary joints, FORJ and electric slip ring can be mixed

Model Breakdown


No. of Rings













































Waterproof Slip Ring Application

Waterproof slip rings are used in several fields and industries that require reliable conductivity in water or damp conditions. Below are some of the typical applications:

  • Maritime Equipment: Waterproof slip rings are indispensable in equipment used for offshore exploration, deep-sea salvage operations, naval defense systems, and maritime communication devices.
  • Underwater ROVs (Remotely Operated Vehicles): These devices are often used for underwater exploration, archaeological digs, and various oceanographic research purposes. The slip rings help transmit power and signals from the surface to the underwater components.
  • Outdoor Camera Systems: Waterproof slip rings are used in outdoor security and surveillance systems to provide rotational energy and enable signal transmission regardless of weather conditions.
  • Wind Turbines: In wind energy systems, slip rings are used to transmit power and data signals between the stationary and rotating parts of the wind turbine.
  • Water Treatment Plants: In such facilities, a waterproof slip ring is commonly utilized where equipment is consistently exposed to moisture and needs reliable power signal transmission.
  • Food and Beverage Industry: Waterproof slip rings are used in automated cleaning systems where water resistance is a necessity.
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Waterproof Slip Ring Advantages

Waterproof slip rings provide several advantages that make them an essential solution in various industry applications. Here are some of their key benefits:

  • Durability and Longevity: These slip rings are built to withstand challenging environments, including exposure to water, moisture, dust, and corrosion. This increases their lifespan and makes them a reliable choice in harsh conditions.
  • Versatility: Waterproof slip rings are compatible with a wide range of signals and currents. They can transmit electrical power, data, and other media between stationary and rotating parts, providing versatility in their usage.
  • Seamless Performance: These slip rings can function seamlessly even underwater, providing uninterrupted signal and power transmission.
  • Minimal Maintenance: Given their resistance to harsh conditions, waterproof slip rings require minimal maintenance, which minimizes the overall operating costs.

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