For 5/32-inch (4mm) vacuum tubing, you can choose between silicone and rubber, each with different performance characteristics. Silicone hose is known for high-temperature resistance and durability, while rubber hose is suitable for general applications. Reinforced silicone options are available for higher pressure systems.
Silicone vacuum tubing
Silicone vacuum hose is more durable, flexible, and resistant to higher temperatures than rubber, but is not suitable for oil or fuel. It is a popular choice for automotive
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Working temperature: -60°C to +180°C (-75°F to +350°F), according to 1st Auto Parts.
Resistant to: Harsh sunlight, dry conditions, and rainwater.