- 270 PCS O-RING SET: This comprehensive kit includes 270 O-rings specifically designed for air conditioning systems, ensuring you have the right seal for various applications. - CONVENIENT ORGANIZATION: The O-rings are housed in a sturdy plastic case, making it easy to keep them organized and readily accessible for quick repairs or maintenance tasks. - VERSATILE SIZING: Featuring 18 of the most commonly used sizes, this set provides a wide selection to meet different sealing requirements, making it ideal for both DIY projects and professional use. - DURABLE AND LIGHTWEIGHT: Crafted from hydrogenated nitrile butadiene rubber (HNBR), these O-rings offer exceptional durability while remaining lightweight, ensuring long-lasting performance without adding unnecessary weight. - APPLICATIONS: Perfect for HVAC repairs, automotive air conditioning systems, and refrigeration units, these O-rings effectively prevent leaks, maintaining system efficiency and performance. - COMPATIBILITY: Designed to fit a variety of standard air conditioning units and components, making this set an essential addition to any toolkit for technicians or home users. - RELIABLE PERFORMANCE: The high-quality material and precise dimensions ensure a secure fit, reducing the risk of leaks and prolonging the lifespan of your equipment.