01 — Overview

What Is a Rubber Hose?

A rubber hose is a flexible industrial pipeline designed to transfer liquids, gases, and abrasive materials under pressure. Built from vulcanized rubber compounds and reinforced with textile or steel wire layers, rubber hoses deliver the flexibility and durability required by demanding industrial environments.

Rubber hoses are used across manufacturing, agriculture, construction, oil & gas, and automotive sectors worldwide. Unlike rigid pipes, their flexibility allows routing around machinery, absorbing vibration, and connecting moving parts — without compromising pressure performance.

02 — Construction

Rubber Hose Structure

All industrial rubber hoses share a three-layer construction. Each layer serves a specific engineering function:

Cross-section diagram of industrial rubber hose showing inner tube, reinforcement and outer cover layers
Typical 3-layer rubber hose cross-section: inner tube, reinforcement, outer cover
Layer Common Material Engineering Function
Inner Tube NBR / EPDM / NR Direct contact with media — must be chemically compatible
Reinforcement Polyester textile / Steel wire braid / Steel spiral Determines working pressure and burst resistance
Outer Cover SBR / CR / EPDM compound Protects against abrasion, UV, ozone, and weather
03 — Materials

Rubber Compound Selection

The rubber compound used for the inner tube is the most critical material decision. It must be chemically compatible with the fluid being transferred. The four most common compounds in industrial rubber hose manufacturing:

Compound Key Property Best For Avoid With
NBR (Nitrile) Oil & fuel resistant Hydraulic oil, diesel, fuel lines Ozone, strong acids
EPDM Heat & ozone resistant Water, steam, brake fluid Petroleum-based fluids
SBR Cost-effective, flexible Air, water, general industrial Oils, fuels, solvents
Neoprene (CR) Chemical & flame resistant Refrigerants, mild chemicals Strong oxidizing agents
04 — Product Range

Types of Industrial Rubber Hose

Range of industrial rubber hoses including hydraulic, air, water and oil transfer hoses
CNFLEX industrial rubber hose product range
Air Hose
For pneumatic tools and compressors. Light, flexible, abrasion-resistant cover.
Water Hose
Agricultural irrigation and industrial water transfer. EPDM inner tube.
Oil Hose
Fuel and lubricant transfer. NBR inner, steel wire reinforced.
Chemical Hose
Acid, alkali and solvent transfer. UHMWPE or PTFE lining available.
Hydraulic Hose
High-pressure systems. SAE 100R1–R17 standards. Wire braid or spiral.
Steam Hose
Saturated steam transfer up to 18 bar. EPDM compound, helical wire.
05 — Specifications

Technical Parameters

Standard performance ranges for CNFLEX industrial rubber hose products. Custom specifications are available on request for OEM applications.

Parameter Standard Range Notes
Working Pressure 10 – 600 bar Depends on reinforcement type and diameter
Temperature Range -40°C to +120°C EPDM steam hose up to +180°C
Inner Diameter 6mm – 300mm OEM sizes available
Safety Factor ≥ 3:1 (burst/working) Per ISO / SAE standards
Standards SAE J517 / ISO 18752 / EN 853 CE / RoHS available
06 — Applications

Industry Applications

Industry Typical Use Recommended Type
Agriculture Irrigation, sprayer systems EPDM water hose, layflat hose
Construction Hydraulic excavators, concrete pumping High-pressure hydraulic hose
Manufacturing Air tools, coolant systems Air hose, water hose
Oil & Gas Fuel transfer, suction & discharge NBR oil hose, composite hose
Automotive Turbo, radiator, brake systems EPDM / silicone hose
Mining Slurry, compressed air Heavy-duty abrasion-resistant
07 — Comparison

Rubber Hose vs PVC Hose

Understanding when to choose rubber over PVC is one of the most common buyer questions. The decision comes down to pressure requirements, temperature range, and service life expectations:

Factor Rubber Hose PVC Hose
Working Pressure High (up to 600 bar) Low–Medium (up to 20 bar)
Temperature Range Wide: -40°C to +120°C Limited: 0°C to +60°C
Durability High — excellent fatigue resistance Medium — becomes brittle over time
Flexibility (cold) Remains flexible at -40°C Stiffens below 5°C
Chemical Resistance Compound-dependent, broad range Good for mild chemicals
Unit Cost Higher initial cost Lower initial cost
Long-term Value Better — longer service life Moderate — more frequent replacement

Rule of thumb: Choose rubber when pressure exceeds 20 bar, operating temperature is below 5°C or above 60°C, or when continuous flexing is required. PVC is suitable for light-duty, cost-sensitive applications in mild environments.

08 — Selection Guide

How to Choose the Right Rubber Hose

Use the STAMPED method — the industry-standard framework for hose selection. Each letter represents a critical parameter that must be confirmed before ordering:

STAMPED Selection Framework

S — Size
Inner diameter & length
T — Temperature
Fluid & ambient temp range
A — Application
Static or dynamic? Routing?
M — Material
Fluid compatibility (NBR/EPDM…)
P — Pressure
Working pressure + safety factor
E — Ends
Fitting type & connection standard
D — Delivery
Lead time & quantity

When in doubt, contact our technical team with your fluid type, working pressure, and temperature range — we will recommend the correct specification.

09 — Quality Notes

Common Selection Mistakes

⚠ Avoid These Errors

  • Wrong rubber compound — Incompatible fluid causes inner tube swelling, softening, or delamination. Always confirm chemical compatibility before ordering.
  • Underrated working pressure — Using a hose rated below system pressure leads to premature failure or burst. Include a minimum 3:1 safety factor.
  • Ignoring temperature limits — Exceeding maximum temperature causes rapid compound degradation and cracking. Steam hoses require a different specification from standard water hoses.
  • Incorrect bend radius — Bending tighter than the minimum bend radius kinks the reinforcement and reduces service life significantly.
  • Mismatched fittings — Using non-crimped or wrong-size fittings is the most common cause of hose assembly failure in the field.