The 4Pipe Plug Drilled Plug from Fittings Unlimited Inc is designed for secure sealing in piping systems. This plug features a 4mm diameter, providing a tight fit to prevent leaks. Made from high-quality materials, it meets industry standards for pressure and temperature ratings, ensuring reliability in various applications. The drilled design allows for easy installation and removal, making it a versatile choice for professionals. Ideal for use in plumbing, HVAC, and industrial settings, this plug is essential for maintaining system integrity.