Mateu's O-rings are an essential plumbing accessory that can be used in a variety of applications. These O-rings are made from high quality rubber and provide a reliable seal for various plumbing installations including taps, baths, showers, dishwashers and washing machines. With an inner diameter of 31 mm and an outer diameter of 38.5 mm, they are ideal for sealing connections and preventing water from leaking. The O-rings are available in practical packs of five, making them easy to handle and store. They are suitable for use in various areas such as kitchen, WC, siphon and heating and offer a long-lasting solution for your installation needs. Manufactured from high quality rubber for optimum sealing performance. Suitable for a wide range of plumbing applications. Convenient pack of five O-rings for easy handling. Inner diameter of 31 mm and outer diameter of 38.5 mm for versatile applications.