- Comprehensive mechanical O-ring set containing 419 pieces, organized in a durable plastic case for easy access and storage. - Ideal for sealing connections in automotive applications such as car air conditioning systems and air intake pipes. - Made from high-quality NBR nitrile rubber, these O-rings are resistant to acids, petrol, heat, and oils, ensuring long-lasting performance in various environments. - Offers a wide range of sizes with inner diameters ranging from 4.4 mm to 38 mm, providing compatibility for multiple applications and needs. - Use scenarios include: 1. Replacing worn-out O-rings in vehicle air conditioning systems to prevent leaks and maintain efficiency. 2. Sealing air pipes in automotive or industrial setups to ensure optimal airflow and performance. 3. Repairing fuel systems by using the appropriate O-ring size to prevent fuel leaks and enhance safety. - This extensive set is perfect for DIY enthusiasts and professionals alike, ensuring you have the right O-ring for any sealing task.