Expanding bungs, also known as pipe stoppers, are essential tools in plumbing and pipeline maintenance. Their primary function is to temporarily block or seal pipes, simplifying tasks like repairs and inspections. These versatile tools come in a range of sizes and materials, ensuring a perfect fit for various pipes and applications. Expanding pipe stopper bungs provide a reliable and secure method for controlling liquids or gases in pipes, making them invaluable in construction and utility work.