This comprehensive AC O-ring kit contains 270 assorted pieces to handle all your sealing needs. With O-rings, gaskets, and washers in a wide range of sizes, it's perfect for working on air conditioners, plumbing systems, automotive components, and more. The durable rubber materials form reliable seals that last through countless compression cycles. Whether you're a professional mechanic or DIY enthusiast, you'll appreciate having this complete assortment set at your fingertips. It allows you to quickly find the right sized seal for any job, saving you trips to the hardware store and getting you back to work faster. Store it neatly in the provided case for easy access and organization of its diverse contents.