The shape and size of irregularities on a machined surface have a major impact on quality, performance (leakage), and longevity.

The quantification and management of surface irregularities, through the measurement of surface roughness, is necessary to maintain high product performance.

Part 4 of our video series on Surface Finish will examine filtering. The full table of contents is below: 


Part 4 will discuss:

1. Cut-off Length / Filter

  • Internationally recognized cut-off filters of varying lengths

2. Surface Profiles

  • Measured
  • Primary
  • Roughness
  • Mean Line

3. Profile Lengths

  • Traversing/Tracing Length
  • Evaluation Length
  • Sampling Length

Watch Part 4 of our video webinar series regarding surface finish & filtering:


For more information about Surface Finish or to speak to an engineer about proper surface finish for your application/project, contact Gallagher Fluid Seals today.