Silicone Radiator Hose

Silicone Heater Hose is a flexible, heat-resistant hose engineered for coolant and heating applications in automotive, marine, agricultural, and industrial systems. Constructed with a smooth extruded silicone compound inner layer, reinforced with a 2-ply polyester braid, and finished with a durable silicone outer layer, the hose offers reliable thermal stability, pressure resistance, and long service life. Designed to SAE J20 R3 standards, it operates continuously between -30°C and +200°C, withstanding peak temperatures up to +220°C. Its multi-layer construction ensures durability under thermal cycling, vibration, and continuous use. Silicone heater hose is available in internal diameters from 6 mm to 25 mm, making it versatile for both performance and heavy-duty applications.

Key Features:

• Inner Layer: Smooth extruded silicone compound for efficient coolant flow.

• Reinforcement: 2-ply polyester braid for pressure stability and strength.

• Outer Layer: High-quality silicone for resistance to ozone, heat, and environmental wear.

• Construction: Multi-ply reinforced hose with smooth bore for reliable circulation.

• Operating Temperature: -30°C to +200°C (peak +220°C).

• Internal Diameter Range: 6 mm to 25 mm.

• Working Pressure: Up to 9 bar (smaller sizes) down to 6 bar (larger sizes).

• Bursting Pressure: Up to 27 bar (typically 3x working pressure).

• Bending Radius: From 70 mm to 192 mm depending on bore size.

• Standard: SAE J20 R3 compliant.

The silicone heater hose is designed to provide consistent performance in high-temperature environments, offering excellent resistance to coolant additives, ageing, and cracking. Its polyester reinforcement enhances pressure handling while maintaining flexibility for easy installation. The smooth bore supports efficient coolant flow with minimal restriction, reducing system stress and ensuring stable operation. With working pressures up to 9 bar for smaller diameters and burst pressures up to three times greater, the hose provides a strong safety margin. The long coil format supports large-scale or continuous system installations, making it ideal for industrial and OEM applications.

Applications include automotive heating and cooling circuits, marine engine systems, agricultural equipment, industrial machinery, and motorsport builds. Silicone heater hoses are widely used where reliable thermal performance and durability are required, offering superior longevity compared to conventional rubber hoses. Keywords: silicone heater hose, reinforced silicone coolant hose, high-temperature heater line, 2-ply silicone braid hose, SAE J20 R3 compliant silicone hose, automotive heater hose.