These Welch Chemstar Chemical 1400N Major kits include all the components of the gasket kit plus vanes, v-belts, exhaust valves and springs for a major 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 1400N repair kits are guaranteed to meet or exceed OEM specifications.