The SFP Series covers for split-flange connections are used on SAE 3000 lb., four-bolt split hydraulic flanges. The covers protect port and flange surfaces by fitting securely into opening.: : A: 1.46, B: 1.55, C: 3.69, D: 2.38, E: 0.75, FLANGEDASH: -24, FLANGESIZE: 1 1/.