Meets and exceeds industry standards for safety and durability. With 100PSI working pressure and 300PSI bursting pressure, it is ideal for automotive, industrial and heavy duty applications Premium EPDM material: Made from durable EPDM rubber, this heating hose withholds extreme temperatures (-40°F to 257°F) and is resistant to cracking, aging and chemicals, ensuring long-lasting performance in harsh environments Use the safety striated heater hose to make full use of the heater hose for a long service life. This EPDM hose is suitable for cars and light trucks and is not affected by most coolants, non-oil-based coolant additives and high cooling system pressures. (Not recommended for heavy trucks, buses, or off-road construction equipment; Use green striped heater hose for these applications.)