Hydraulic Hose Selection and Compatibility with Different Fluids

Hydraulic Hose Selection and Compatibility with Different Fluids

November 10, 2023

Rubber,Hoses,And,Tubes,With,Metal,Fasteners,,Industrial,Concept,BackgroundIn the world of heavy machinery and industrial equipment, hydraulic systems play a vital role. Whether it’s in construction, mining, manufacturing, or agriculture, these systems rely on the proper selection and compatibility of hydraulic hoses with different fluids. Choosing the right hose is crucial to ensure optimal performance, safety, and longevity of the hydraulic system. In this blog post, we will explore the factors to consider when selecting hydraulic hoses and their compatibility with various fluids.

Understanding Hydraulic Hose Construction:

Before diving into hose selection and fluid compatibility, it’s important to understand the construction of a hydraulic hose. Hydraulic hoses consist of three layers – an inner tube, reinforcement layer, and outer cover. The inner tube, usually made of synthetic rubber or thermoplastic material, is responsible for carrying the fluid. The reinforcement layer, usually consisting of high tensile steel wires or textile braids, provides strength and durability to withstand high pressure. Lastly, the outer cover protects the hose from wear, abrasion, and environmental factors.

Pressure Ratings and Hose Sizing:

One critical aspect of hydraulic hose selection is understanding pressure ratings and the importance of correctly sized hoses. Pressure ratings indicate the maximum amount of pressure a hose can handle safely. Choosing a hose with insufficient pressure ratings can lead to failure, while selecting a hose with excessive pressure ratings can result in a bulky and expensive system. To ensure proper sizing, factors like flow rate, system pressure, and temperature should be carefully considered.

Fluid Compatibility and Hose Selection:

Matching the hydraulic hose’s compatibility with the fluid being used is vital to prevent chemical reactions or degradation of the hose material. Different fluids can have varying levels of corrosiveness, temperature ranges, and even flammability, which should be taken into account during hose selection. The most commonly used hydraulic fluids are petroleum-based, water-based, and synthetic-based fluids. While most hoses are compatible with petroleum-based fluids, it is crucial to check the manufacturer’s guidelines or consult with experts when dealing with water or synthetic-based fluids.

Temperature Range:

Another critical factor in hydraulic hose selection is the temperature range of the fluid. Hoses must be capable of withstanding extreme temperatures without significant loss in performance or integrity. Different hose materials have different temperature ratings, and exceeding these limits can lead to hose failure or permanent damage. For instance, rubber hoses typically have a lower temperature range compared to thermoplastic hoses. Always choose a hose that can withstand the anticipated temperature fluctuations in your application.

Chemical Resistance:

Certain hydraulic applications involve the use of aggressive chemicals, acids, or alkalis. In such cases, the hose must be highly resistant to chemical degradation. Not all hoses are compatible with aggressive chemicals, and choosing the wrong hose can result in leaks, hose degradation, or even catastrophic failure. Compatibility charts and consultation with specialists are essential when selecting hoses for chemical applications.

Abrasiveness and Wear Resistance:

In industries like mining or construction, where hydraulic systems face significant wear and abrasion, hoses must be capable of withstanding these harsh conditions. Hose selection should consider its ability to resist wear caused by continuous contact with rough surfaces, sharp objects, or abrasive materials. Reinforcement layers and thicker outer covers are often necessary to provide extra protection and prolong the hose’s lifespan.


When it comes to hydraulic hose selection, there is no one-size-fits-all solution. The proper functioning of a hydraulic system relies on choosing the right hose that is compatible with the fluids and conditions it will encounter. Pressure ratings, fluid compatibility, temperature range, chemical resistance, and wear resistance are all crucial factors that demand careful consideration. By understanding these factors and consulting with hose experts, you can ensure optimal performance, longevity, and safety of the hydraulic system in your industry.

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