This 3 slip-on flange is 316 Stainless Steel with a raised face face in 150#. Looking for a simple way to build or modify a stainless piping connection? This style is a practical choice for many general-purpose stainless piping systems. The raised-face sealing surface is designed to mate well with common gasket styles used on stainless systems. 316 stainless is often chosen when corrosion resistance needs to be taken up a notch, especially around chlorides or harsh washdowns. If youÕre unsure which style is right for your setup, contact usÑweÕll help you narrow it down fast.