Rubber foam ball was first used as the floating ball in fuel sensor, but it will be corroded by alcohol in gasoline after alcohol is added, so it is imperative to replace rubber foam ball with plastic hollow pepper ball.

The disadvantages of using foamed rubber balls in gasoline sensors are that the density is high, the buoyancy is not enough, and the toughness of rubber becomes worse after foaming, so it is easy to break, which poses a safety hazard to gasoline vehicles. Using PA plastic nylon hollow pepper balls in gasoline vehicle sensors can overcome these shortcomings. PA nylon hollow pepper balls have long service life in fuel sensors, are safe and environmentally friendly, and have become the mainstream accessories of gasoline sensor accessories.