Product Overview

The engineering vehicle fuel special rubber hose is a core supporting pipeline for construction machinery fuel systems, specially used for diesel conveying. It solves common pain points of ordinary hoses such as poor oil resistance, easy aging at high temperature, collapse under negative pressure, low-temperature brittleness and outdoor cracking. Adopting integrated vulcanization molding technology with three layers of NBR, fiber reinforcement and CSM, the layers are firmly bonded without delamination or bulging. It combines excellent oil resistance, wide temperature adaptability, negative pressure stability and ozone aging resistance, fully complying with the national standard GB/T7762. Suitable for harsh working conditions such as high temperature in engine compartment, outdoor low temperature and continuous vibration of engineering vehicles, it is an optimal accessory for engineering vehicle fuel pipelines.

Product Material & Structure

• Inner Rubber Layer: Made of high-quality NBR nitrile rubber, it has strong corrosion resistance to diesel. No swelling, deformation or oil leakage during long-term diesel conveying. The inner wall is smooth and dense to block fuel penetration and eliminate hidden dangers of pipeline leakage.

1. Reinforcement Layer: Built-in high-strength industrial fiber braided layer improves the tensile strength and flex fatigue resistance of the hose. It can withstand vibration and torsion during vehicle operation without deformation or cracking, ensuring stable pressure and negative pressure resistance.
2. Outer Rubber Layer: Made of CSM chlorosulfonated polyethylene rubber with excellent weather resistance, ozone resistance and UV resistance. It is high and low temperature resistant and anti-aging, resisting erosion of outdoor sunlight, rain and ozone, no hardening or cracking after long-term use.

Core Technical Parameters

• Applicable Medium: Diesel
• Working Temperature Range: -40℃～100℃
• Negative Pressure Resistance: -0.08MPa at 80℃
• Ozone Aging Standard: Comply with GB/T7762, ozone partial pressure 50±5MPa, temperature 40±2℃, no cracking after 72-hour test
• Conventional Inner Diameter: DN6, DN8, DN10, DN12, DN16, DN20, DN25, DN32, DN40, DN50
• Customization: Customizable arbitrary length, special-shaped bent pipes, reducing pipes and matching joints as required

Core Performance Advantages

1. Excellent Diesel Corrosion Resistance: Special oil-resistant formula of NBR inner rubber, no swelling, corrosion or penetration during long-term diesel conveying, avoiding fuel loss and potential safety hazards.
2. Wide Temperature Range Adaptability: No brittleness at -40℃ severe cold, no softening or deformation at 100℃ high temperature, stable operation for engineering operations across all regions.
3. High Temperature Negative Pressure Collapse Resistance: It can withstand -0.08MPa negative pressure suction at 80℃, no collapse or flat pipe during conveying, ensuring smooth oil supply without blockage.
4. National Standard Ozone & Aging Resistance: Tested in accordance with GB/T7762 standard, no cracking after 72-hour ozone aging test. UV and weather resistant, doubling the service life for long-term outdoor use.
5. Flexible & Vibration Resistant: The combination of fiber reinforcement and special rubber material features good flexibility and small bending radius, suitable for wiring in narrow engine compartments. Resist continuous vehicle vibration without falling off or oil leakage.
6. Complete Specifications & Customization: Sufficient stock of conventional specifications covering mainstream engineering vehicle pipeline calibers. Customizable non-standard length and special-shaped bent pipes to match fuel systems of various domestic and imported construction machinery.

Application Scope

Widely used in excavators, loaders, bulldozers, road rollers, graders, forklifts and other full-series engineering machinery and equipment; suitable for engine fuel inlet pipe, return pipe, fuel tank connecting pipe, fuel pump connecting pipe and other full-series fuel system pipelines.

Factory Supply Advantages

We specialize in the production of engineering vehicle fuel special rubber hoses, adopting national standard raw materials and integrated vulcanization technology. Each product has passed oil resistance, high and low temperature, negative pressure and ozone aging tests with strict quality control. Conventional specifications are in sufficient stock with short customization cycle for non-standard products. We support bulk orders and supporting accessory supply without middleman premium and high cost performance. Stable long-term supply is available for construction machinery parts dealers, maintenance factories and engineering equipment manufacturers.