Cutaway diagram of a rotary airlock showing rotor tip clearance, particle trapping, attrition at the nip and fine-particle leakage.

Technical cutaway illustration of a rotary airlock showing the rotor vane, housing bore and radial tip clearance. The image identifies possible particle trapping and chipping near the vane tip, attrition at the nip and fine-particle leakage through the clearance toward the low-pressure side.