High-Performance Coolant Rubber Hose for Industrial & Automotive Systems
In demanding thermal management systems, the reliability of your cooling circuit is non-negotiable. Our premium coolant rubber hose is engineered to withstand extreme temperature fluctuations, high pressure, and chemical exposure. Designed for B2B buyers seeking durability and compliance, this hose ensures optimal fluid transfer in engines, radiators, and industrial heat exchangers.
1. Product Overview
Our coolant rubber hose is a flexible, reinforced conduit specifically formulated for circulating coolant, water, and antifreeze mixtures. Built with a synthetic rubber compound and textile reinforcement, it resists cracking, swelling, and delamination under continuous thermal stress. Available in custom diameters and lengths, this hose meets SAE J20 and ISO 9001 standards, making it the preferred choice for OEMs and aftermarket distributors.
2. Key Features
- High-Temperature Resistance: Operates continuously from -40°C to +125°C (-40°F to +257°F), with intermittent peaks up to +150°C.
- Chemical Compatibility: Resists ethylene glycol, propylene glycol, water, and corrosion inhibitors.
- Reinforced Construction: Two-ply polyester or aramid fiber braiding prevents bursting under pressure up to 20 bar (290 psi).
- Flexibility: Tight bend radius allows installation in confined engine compartments without kinking.
- Anti-Ozone & UV Protection: Outer layer resists environmental cracking and degradation.
- Long Service Life: Tested for 500,000+ thermal cycles with no leakage.
3. Technical Specifications
| Parameter | Value |
|---|---|
| Inner Diameter Range | 6 mm – 50 mm (1/4" – 2") |
| Wall Thickness | 3.5 mm – 5.0 mm |
| Working Pressure | 10 bar – 20 bar (145 – 290 psi) |
| Burst Pressure | ≥ 60 bar (870 psi) |
| Temperature Range | -40°C to +125°C (continuous) |
| Material | EPDM / SBR synthetic rubber |
| Reinforcement | Polyester or aramid fiber braid |
| Standards | SAE J20, ISO 9001, RoHS, REACH |
| Color | Black (standard), blue or red available |
4. Application Scenarios
- Automotive Cooling Systems: Radiator hoses, heater hoses, turbocharger coolant lines in passenger cars, trucks, and buses.
- Industrial Machinery: Heat exchangers, compressors, hydraulic oil coolers, and injection molding equipment.
- Marine & Off-Road: Engine cooling in boats, tractors, and construction vehicles exposed to saltwater and mud.
- Renewable Energy: Thermal management in solar thermal collectors and battery cooling systems for electric vehicles.
5. Advantages
- Zero Leakage Guarantee: Precision-molded ends and consistent wall thickness ensure leak-proof connections.
- Reduced Downtime: Superior flexibility and fatigue resistance minimize replacement frequency.
- Global Compliance: Meets SAE, DIN, and ISO standards for international shipping and OEM contracts.
- Customizable: Available with pre-installed fittings, silicone coating, or corrugated outer surface for abrasion resistance.
- Cost-Effective: Lower total cost of ownership compared to silicone or metal alternatives.
6. Why Choose Us
With over 15 years of experience in rubber hose manufacturing, we provide coolant rubber hose solutions trusted by Fortune 500 automotive suppliers and industrial OEMs. Our factory is ISO 9001 certified, and every batch undergoes 100% pressure testing and thermal aging analysis. We offer:
- Fast Lead Times: Standard sizes ship within 7–15 days.
- Technical Support: Engineers available to design custom hose assemblies.
- Bulk Pricing: Volume discounts for large orders (500+ meters).
- Sample Program: Free samples for qualified buyers.
7. FAQ
Q: Can this coolant rubber hose be used with high-ethylene glycol mixtures?
Yes. Our EPDM compound is specifically formulated to resist glycol-based coolants and corrosion inhibitors without swelling or hardening.
Q: What is the minimum bend radius?
For a 25 mm ID hose, the minimum bend radius is approximately 3x the outer diameter (e.g., 75 mm). Always consult our technical data sheet for exact values.
Q: Do you offer cut-to-length service?
Absolutely. We provide custom lengths from 0.5 m to 100 m with clean, square-cut ends.
Q: Is this hose suitable for food-grade or potable water?
No. This product is designed for industrial coolants only. For food-grade applications, please request our FDA-compliant silicone hose series.
Q: How should I store the hose?
Store in a cool, dry place away from direct sunlight, ozone sources (e.g., electric motors), and temperatures above +40°C. Shelf life is 5 years from manufacturing date.
Contact our sales team today for a quotation or to request a free sample of our coolant rubber hose. We ship globally with door-to-door logistics.