The company says anyone who has ever looked closely at a rubber air hose likely has noticed tiny uniform holes, or pinpricks, along the length of the line. Though they may appear unintentional, the company says these holes are in fact deliberate.
The company writes, “Rubber is a permeable material, meaning that at a slow rate, steam, air and gaseous products can pass through the rubber barrier. Air pushed throughout a tractor/trailer’s pneumatic braking system under high amounts of pressure will begin to penetrate through the core of the rubber tubing accumulating in-between the layer of reinforcement and outer covering. Swelling and bubbling would become visible under the outer layer where these gases would begin to buildup, damaging or possibly bursting the hose.
“However,” the company adds, “pinpricking permits trapped gases between these two layers to escape, extending the life of the air line and avoiding possible damage, which can lead to downtime.”
For more from Phillips about this hose construction, please CLICK HERE.
