The 4" 300# Black Malleable Iron Cap from Service Metal Products is a robust solution for sealing pipe ends in high-pressure applications. Constructed from high-quality malleable iron, this cap is rated for 300 psi, making it suitable for various industrial and plumbing applications. Its durable finish provides excellent resistance to corrosion and wear. Designed to meet ANSI standards, this cap ensures a secure fit and reliable performance in both water and gas systems. Ideal for use in construction and maintenance projects, it effectively prevents leaks and maintains system integrity.