These Welch 1396 Major kits include all the components of the gasket kit plus vanes, V-belts, exhaust valves and springs for a light rebuilt or overhaul. The rotary pump vanes are included in these major rebuild and repair kits. The shaft seal assembly in these kits are made from lip-type seals. These Welch 1396 repair kits are guaranteed to meet or exceed OEM specifications.