Wearing in PEEK seals

Pressure rise across successive compression stages requires seals at the impeller eye and rotor shaft to prevent gas backflow from the discharge to the inlet end of the compressor. The effectiveness of these seals directly affects the compressor efficiency. The simplest and most economical of all shaft seals is the straight labyrinth seal shown in Fig. 1 and Fig. 2. This seal is commonly utilized between compression stages and consists of a series of thin strips or fins, which are normally part of a stationary assembly mounted in the diaphragms. Fig. 1. Seals are required at the impeller eye and rotor shaft to prevent gas backflow from the discharge to the inlet end of a co