The SEALFAST 5/16" ORB Plug is a high-quality component designed for sealing applications in hydraulic and pneumatic systems. This plug features a 5/16 inch size with an O-ring boss (ORB) design, ensuring a leak-proof seal under pressure. Constructed from durable materials, it is built to withstand harsh environments and provide reliable performance. The plug is compatible with various fittings and is ideal for use in automotive, industrial, and construction applications. Its easy installation process makes it a preferred choice for professionals seeking efficiency and reliability.