High Temperature Silicone Heater Hose | 3/8" ID Blue | Heavy-Duty & Industrial – 10ft (3m)

Built for heavy-duty vehicles, industrial machinery, and high-performance thermal systems, this multi-ply reinforced silicone heater hose delivers reliable coolant and heater-circuit performance where ordinary rubber hose fails. With a 9.5 mm (3/8") inner diameter and a vivid blue jacket for easy line identification, it is engineered to handle continuous high-heat operation without cracking, hardening, or losing flexibility.

Key Specifications

• Inner Diameter (ID): 9.5 mm (3/8")
• Available Lengths: 1.5 m, 3 m, 5 m rolls
• Material: Multi-ply reinforced silicone
• Temperature Range: -65 C to +177 C (-85 F to +350 F)
• Working Pressure: Up to 70 psi (size-dependent)
• Standards Compliance: Meets SAE J20 heater hose performance requirements
• Color: Blue

Why It Performs

Polyester braid reinforcement with 70 durometer hardness gives this hose the strength to resist pressure, vibration, and wear, while staying flexible enough to route around tight bends in engine bays and equipment housings.

UV and ozone stable, so it holds up outdoors and in high-exposure industrial environments without degrading.

Resists electrochemical degradation, keeping seals and connections intact over years of thermal cycling.

Typical Applications

• Engine coolant and heater circuits in heavy-duty vehicles
• Industrial thermal transfer lines
• Construction and agricultural equipment cooling systems
• Auxiliary heating loops in buses, RVs, and marine systems
• HVAC and industrial heating applications

Related Products

Silicone Heater Hose with Green Polyester Reinforcement (12mm ID)

Extreme High Temperature Silicone Heater Hose (0.98in ID, Black)