How to Select Potting Adhesives for Parking Radars?ELAPLUS — Sealing & Protection Solutions for Automotive Sensors

Potting adhesives are critical to ensure long-term reliable operation of automotive ultrasonic parking sensors under extreme temperature & humidity, continuous vibration and high-pressure water spray. From the perspective of automotive electronics engineers, this article compares two mainstream solutions: silicone potting compounds and polyurethane potting compounds. It covers mixing ratios of two-component potting adhesives, low-temperature performance and waterproof potting processes for sensors. Meanwhile, we recommend two rigorously validated potting solutions from ELAPLUS for automotive sensors. When you shift into reverse, the dashboard lights up and the familiar beeping sound goes off — this is how a parking radar system works in daily use. Yet few people know what harsh conditions the ultrasonic sensors hidden inside the rear bumper have to endure: frigid temperatures as low as -40°C in winter in Northeast China, temperatures approaching 100°C after direct sunlight exposure in summer, direct impact from high-pressure water guns during car washing, weeks of high humidity in rainy seasons, plus constant vibration caused by countless starts and stops every day. A parking radar normally stays in service for over a decade, and its invisible yet essential protective layer is the potting adhesive. Industry research shows that the global parking radar market exceeded 60 billion RMB in 2026. With the widespread adoption of L2+ autonomous driving, ultrasonic radars are installed in more vehicles with higher reliability requirements. For sensor manufacturers, the selection of potting adhesives directly affects product aging resistance and end-user reputation. Choosing the right potting material for automotive electronics helps reduce after-sales failure rates and extend product service life. Based on real demands from automotive electronics engineers, ELAPLUS presents two fully qualified potting solutions for parking sensors. Potting Adhesive Selection for Parking Radars: Strict Performance Requirements for Sensors Before introducing specific products, let’s review the core criteria for selecting potting adhesives for…