Plugs

Professional Ductile Iron Plugs for Mechanical Joint Systems (MJ)

Discover heavy-duty ductile iron plugs engineered for secure pipe closure in commercial and municipal water systems. Our mechanical joint plugs provide superior corrosion resistance and long-lasting performance for pressurized applications up to 350 PSI.

These professional-grade ductile iron fittings feature precision-machined surfaces for optimal sealing with gaskets and glands. Available in standard sizes from 4" to 24", our MJ plugs integrate seamlessly with existing pipe fitting systems for municipal water distribution, fire protection networks, and industrial process piping.

Compatible with pump connections and commercial water heating systems, these plugs meet AWWA C111 standards for reliability you can trust. Shop our complete selection with free shipping on orders over $99.