Intro For pump and pressure-screen operators seeking a dependable Burgmann LP-D replacement, FBU Sealing Technology (FBU) offers the 2750 double mechanical seal engineered for heavy-duty equipment. This article compares the Burgmann LP-D and FBU 2750 side-by-side, highlights compatibility with Sulzer A (Ahlstar) pumps and common pressure-screen brands, and explains why the 2750 is a practical alternative for demanding pulp, paper and process applications.