The McAlpine DC4-BL Blank Cap is a fitting that is designed to seal a 4"/110mm pipe made of cast iron, plastic, or clay. It is used to cap off a pipe, preventing any water or debris from entering or exiting the pipe. The blank cap is made from durable materials and is designed to provide a secure and reliable seal. It is easy to install and can be used in a wide range of applications, including domestic and commercial plumbing systems. If you need to seal a 4"/110mm pipe made of cast iron, plastic, or clay, the McAlpine DC4-BL Blank Cap is a suitable choice that you can consider. However, it is always recommended to consult with a professional plumber or contractor to ensure that you are using the appropriate fittings and materials for your specific plumbing needs. Suitable for sealing cast iron, plastic or clay 4"/110mm pipe Manufactured in Polypropylene McAlpine DC4-BL Black 4"/110mm Drain Connector Blank Cap