This 3 blind flange (304 Stainless Steel) is a clean match for 150# raised-face connections. Use this blind flange when you want a familiar, bolt-together connection you can service later without drama. Blind flanges are used to close off the end of a line, valve, or vessel nozzleÑgreat for isolating sections for service. This is the clean way to cap a connection without changing the rest of your piping layout. 304 offers a strong balance of durability, availability, and value. PLYET Industrial Supply keeps these on hand for maintenance teams and installers who need parts that show up ready to work. If youÕre unsure which style is right for your setup, contact usÑweÕll help you narrow it down fast.