YouÕre getting a 1 1/2 blind flange in 316 Stainless Steel built around a raised face sealing surface and 150# pattern. ItÕs a favorite in more demanding environments where long-term resistance is the priority. If youÕve ever needed to bolt pipe to a valve or piece of machinery, this blind flange is the part that makes that connection possible. TheyÕre handy when you need a solid, leak-resistant shutdown point for testing, maintenance, or future expansion. The raised-face sealing surface is designed to mate well with common gasket styles used on stainless systems. If youÕre unsure which style is right for your setup, contact usÑweÕll help you narrow it down fast.