· 【Premium Material】: This sealing o-ring kit is made of high quality butyral rubber material with strong sealing properties and smooth burr-free surface. It is waterproof, UV-resistant, corrosion-resistant, oil-resistant and impact-resistant, which can provide you with a long service time without fading.· 【Product Function】: These rubber gasket repair kits ensure the air conditioning system is sealed against refrigerant leaks. It also helps keep the system running efficiently. It is a good auto repair accessory.· 【Installation Tips】: Our sealing o-ring kits are easy to use, simply place the rubber o-ring into the pipe that needs to be repaired. Please note: These air conditioning seal repair kits are conical, not cylindrical. Therefore, you will need to use the larger diameter end to make a proper connection.· 【Scope of Application】: These automotive air conditioning repair gasket kits fit all standard 1/4” A/C refrigeration hoses, high pressure HVAC refrigerant charging hoses, manifold repair replacement kits. Please check your machine model and our products match before purchase.· 【You Will Get】: This product has a top diameter and height of 0.29 inches and a bottom diameter of 0.34 inches. Each package contains 50 sealing o-rings, these quantities to meet your daily needs. You can also share them with family and friends who need them.