Our Series 8555-P Metric MM 1.5 Pitch Plug adapters, made from high-quality carbon steel, are designed to provide a secure seal for unused ports in hydraulic and fluid systems. Featuring a 1.5 pitch Metric Male (MM) thread, these plugs offer a precise and reliable connection that effectively prevents leaks and maintains the integrity of the system. The 1.5 pitch ensures a tight fit, making these plugs ideal for systems with metric connections that require a durable, long-lasting seal. Easy to install and remove with standard tools, Series 8555-P adapters are the perfect solution for professionals looking to close off open ports in high-pressure environments, offering both reliability and convenience.