Automotive Silicone Hose | Turbo, Cooling & EV Thermal Management | Rekky
Turbocharger coolant, oil lines & EV battery thermal management
Industry Overview
The automotive industry is undergoing its most significant transformation in a century — from internal combustion engines to electric vehicles, from mechanical systems to software-defined vehicles. Throughout this evolution, one constant remains: the need for reliable fluid transfer components that perform under extreme thermal, pressure, and vibration conditions.
Rekky Technology’s automotive-grade silicone hoses are engineered for both traditional ICE applications and emerging EV thermal management systems. Our High-Temperature Silicone Hose, formulated with phenyl-modified silicone (PMQ), delivers continuous operation at 250°C — critical for turbocharger hot-side connections, EGR systems, and exhaust gas recirculation. For EV applications, our platinum-cured tubing provides the chemical inertness and thermal stability needed for battery coolant circuits, inverter cooling, and fuel cell thermal management.
We support automotive OEM qualification through IATF 16949 quality systems, PPAP submission, and full material traceability. Our engineering team has direct experience with turbocharger, cooling system, and hydrogen fuel cell hose development — from concept to production.
Compliance & Certifications
- IATF 16949 — Automotive quality management (supported)
- PPAP — Production Part Approval Process (supported)
- RoHS — Restriction of hazardous substances
- REACH — EU chemical safety
- Automotive OEM Specs — Custom material formulations available
Industry Challenges & Solutions
| Challenge | Rekky Solution |
|---|---|
| Turbo high temperatures (>200°C) | PMQ modified, 250°C continuous |
| Vibration and pulsation fatigue | Aramid braid, excellent fatigue life |
| EV battery coolant compatibility | Resistant to ethylene glycol, low conductivity |
| Fuel/oil contact | Fluorosilicone lining, oil/fuel resistant |
| OEM quality traceability | IATF 16949, PPAP support |
| Lightweight requirements | Silicone density low, lighter than rubber |
Recommended Products
| Product | Application | Key Advantage |
|---|---|---|
| High-Temperature Hose | Turbo intake, EGR | 250°C continuous, 300°C short-term |
| Braided Silicone Hose | Intercooler, cooling system | Aramid braid, fatigue resistant |
| Fluorosilicone Lined Hose | Fuel line, oil line | Oil/fuel resistant, <5% swell |
| Steel Wire Reinforced Hose | Vacuum booster tube | Full vacuum, no collapse |
| Color-Coded Tubing | Wiring harness identification | Color coding, OEM branding |
Key Applications
Turbocharger Systems
Turbocharger hot-side connections experience temperatures regularly exceeding 200°C, with pressure pulsations from the compressor. Our PMQ High-Temperature Hose withstands 250°C continuous operation and 300°C short-term spikes, while the optional glass fiber or aramid braid provides pressure resistance and fatigue life under pulsating flow.
EV Battery Thermal Management
EV battery packs require precise thermal management to maintain performance and safety. Our platinum-cured silicone tubing is compatible with common battery coolants (ethylene glycol, propylene glycol) and maintains flexibility across the full operating temperature range (-40°C to +220°C). The low electrical conductivity of silicone makes it safe for use near high-voltage battery systems.
Cooling & HVAC Systems
Engine coolant and HVAC lines require hoses that resist glycol-based coolants, ozone, and UV exposure over a 10+ year vehicle life. Our automotive-grade silicone formulations include UV and ozone stabilizers for under-hood durability, while the wide temperature range ensures performance from cold-start to high-load operation.
Fuel Cell Vehicles
Hydrogen fuel cell systems require tubing that can handle deionized water coolant at elevated temperatures while maintaining ultra-low ionic extractables. Our pharma-grade platinum-cured tubing meets these requirements, with full batch traceability and COA documentation for fuel cell OEM qualification.
Frequently Asked Questions
Yes. We provide full PPAP documentation including material certifications, dimensional reports, process flow diagrams, FMEA, control plans, and initial sample inspection reports. Our quality system is structured to support IATF 16949 requirements.
VMQ (standard silicone) is rated to 220°C continuous. PMQ (phenyl-modified silicone) extends this to 250°C continuous and 300°C short-term by adding phenyl groups that improve thermal oxidation resistance. PMQ is recommended for turbocharger and exhaust applications.
Yes. Our platinum-cured silicone is chemically resistant to ethylene glycol, propylene glycol, and dielectric coolants used in EV battery thermal management systems. We can provide compatibility data and long-term aging test reports.
Related Products
- High-Temperature Silicone Hose
- Braided Silicone Hose
- Fluorosilicone Lined Hose
- Steel Wire Reinforced Hose
- Color-Coded Silicone Tubing
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