YouÕre getting a 3 threaded flange in 304 Stainless Steel built around a raised face sealing surface and 150# pattern. This is one of those parts that makes installs and future maintenance a lot easier. Because they thread onto the pipe, they can speed up certain repairs and modifications. ItÕs built with a raised-face surface to help create a confident seal when paired with the right gasket. 304 offers a strong balance of durability, availability, and value. From quick repairs to planned upgrades, PLYET Industrial Supply ships the flanges you need without the runaround. Have a question before you buy? Send us the basics of your application and weÕll point you in the right direction.