Cutting ring couplings, also known as bite-type fittings, are a type of hydraulic fitting that consists of a body, a cutting ring, and a nut. They are commonly used in high-pressure hydraulic systems and are designed to provide a leak-tight seal.

The cutting ring coupling works by compressing the cutting ring onto the tube or hose, creating a strong and secure connection. As the nut is tightened onto the body, it forces the cutting ring to bite into the tube or hose, creating a permanent connection that can withstand high pressures.

One of the main advantages of cutting ring couplings is their ease of installation. They do not require any special tools or equipment, making them a popular choice for applications where space is limited or access is difficult.

Cutting ring couplings are available in a variety of materials, including brass, stainless steel, and carbon steel. This allows them to be used in a wide range of applications, from low-pressure systems to high-pressure hydraulic systems.

Overall, cutting ring couplings are a reliable and easy-to-use hydraulic fitting that provides a leak-tight seal and can withstand high pressures.