The 10 Blanking Plug w/OR Heavy from Fittings Unlimited Inc is designed to seal off unused ports in hydraulic and pneumatic systems. This 10mm plug features an O-ring for enhanced sealing capabilities, preventing leaks and ensuring system integrity. Constructed from durable materials, it withstands high pressure and temperature, making it suitable for demanding environments. The heavy-duty design ensures longevity and reliability, making it an essential component for maintenance and repair tasks. Its straightforward installation process allows for quick application in various settings.