The 4Pipe Plug from Fittings Unlimited Inc is a reliable solution for sealing pipe ends. With a 4mm diameter, this plug is designed to fit snugly into standard piping systems, preventing leaks and ensuring system integrity. Made from high-quality materials, it offers excellent resistance to corrosion and wear, making it suitable for various applications. This plug meets industry standards, ensuring safety and reliability in plumbing and HVAC systems. Its compact design allows for easy installation and removal, making it a practical choice for professionals.