Malleable Cast Iron Caps – Marine Pipe & Tube Fittings

Malleable cast iron caps are essential pipe fittings used to seal the end of a piping system, providing a secure and leak-proof closure. In marine applications, these caps protect pipe threads from damage, prevent debris ingress, and maintain system integrity under pressure. Constructed from durable malleable cast iron, they offer excellent strength, machinability, and resistance to mechanical shock.

Designed for demanding marine environments, our malleable cast iron caps feature precision NPT threads for a tight installation on standard iron, steel, or brass pipes. Available in both black and hot-dipped galvanized finishes, they provide enhanced corrosion resistance, making them suitable for engine room, ballast, bilge, and general service piping onboard vessels. Each cap is manufactured to industry standards, ensuring reliable performance in high-pressure and temperature application.

With a comprehensive range of sizes from 1/8” to 4” nominal diameter, we cater to various shipboard piping requirements. As a professional ship chandler, we ensure quality products, competitive pricing, and prompt worldwide delivery to keep your vessel operational.