Flange Blind Raised Face (BLRF)

A Blind Raised Face Flange (BLRF) is a type of pipe flange that is used to close off the end of a piping system or a pressure vessel opening. The “raised face” design means that the sealing surface is slightly raised above the bolt circle face. This feature helps in concentrating more pressure on a smaller area, enhancing the sealing effectiveness. BLRF flanges are commonly used in oilfield and industrial applications where it is necessary to securely seal the end of a pipeline or a pressure vessel.