EVIL ENERGY 1" Silicone Heater Hose 10FT Black — SAE J20R3 Class-A, 60 psi, -67°F–356°F

EVIL ENERGY's 1" silicone heater hose is a 10-foot, SAE J20R3 Class-A rated coolant and heater line engineered for durable, high- and low-temperature performance in automotive and industrial systems.

This 1-inch (25.4 mm) inner-diameter silicone hose combines braided polyester reinforcement with resilient silicone walls to deliver long service life, wide thermal tolerance, and dependable pressure handling for coolant, steam and water circulation. Built to meet SAE J20R3 Class-A standards, it’s designed as a direct, flexible solution where EPDM hoses fall short in extreme temperatures or longevity.

How does this hose handle extreme temperatures and pressure?

The hose covers a broad operating window from -67°F to 356°F (-55°C to 180°C), letting it remain flexible in cold starts and stable under high-heat conditions. With a 60 psi working pressure and a tested burst of roughly 174 psi, it offers a robust safety margin for many cooling and heating circuits.

• Temperature range: -67°F to 356°F (-55°C to 180°C)
• Working pressure: 60 psi; burst pressure: ~174 psi
• Minimum bend radius: 127 mm to prevent kinking
• Manufactured to SAE J20R3 Class-A performance expectations

Which fluids and applications are appropriate for this silicone hose?

Designed for transport of water, coolant, steam and mildly acidic or alkaline fluids, the hose is ideal for vehicle heater circuits, radiator bypass lines, and small industrial heating systems. It is not formulated for fuels, engine oils, alcohols, or lubricants — avoid those media to maintain hose integrity and safety.

• Suitable: automotive cooling and heating systems, water heaters, steam lines
• Not suitable: gasoline, alcohol-based fluids, engine oil, lubricants
• Good chemical resistance for weak acids and alkalis
• Flexible for routing in tight engine bays or equipment enclosures

What are the physical dimensions and construction details I should know?

The hose measures 1" inner diameter (25.4 mm) with an outer diameter near 1-3/8" (34.4 mm) and is supplied as a 10-foot continuous length. It uses braided polyester fiber reinforcement sandwiched between silicone inner and outer layers to balance strength, flexibility, and thermal resilience.

• Inner diameter: 1" (25.4 mm) with ±0.4 mm tolerance
• Outer diameter: ~1-3/8" (34.4 mm) with ±0.4 mm tolerance
• Length: 10 feet continuous
• Reinforcement: braided polyester with silicone inner/outer skins

How should I install and maintain the hose for best results?

Trim ends cleanly and use clamps sized for a 1" hose ID; avoid over-tightening which can pinch the silicone. Route the hose with smooth bends no tighter than the 127 mm minimum radius, check connections periodically, and replace if signs of abrasion, cracking, or chemical attack appear.

• Use compatible clamps and avoid over-tightening
• Maintain minimum bend radius of 127 mm to prevent kinks
• Inspect regularly for cuts, wear, or chemical degradation
• Store out of direct sunlight and away from harsh solvents

Who is this for? EVIL ENERGY’s 1" silicone heater hose is aimed at mechanics, custom-builders, and maintenance technicians who need a resilient, temperature-tolerant coolant or heater line for cars, trucks, small industrial equipment, or water-heating systems. If you require a flexible, long-lasting alternative to EPDM for non-fuel fluids and want a hose that meets SAE J20R3 Class-A criteria, this 10-foot silicone hose is a practical choice.