Seal for compressor shaft has grooved surface contacting shaft, one set of grooves consisting of concentric circles cut by separate straight grooves which meet them at acute angle and have imaginary intersection points inside inner circle

摘要

The seal (111) for a compressor shaft (102) has a grooved surface (111a) which contacts the shaft. One set of grooves (111b) consists of concentric circles. These are cut by separate straight grooves (111c, 111d) which meet them at an acute angle and have imaginary intersection points inside the inner circle.