SEAL FACE FLATNESS READINGS

The following chart describes the patterns you could observe if you looked through an optical flat at a lapped mechanical seal face that was illuminated by a monochromatic light source. For an explanation of how these patterns were formed you can read the paper Reading seal face flatness 6-3 on another page in this web site.

I have left the white background to assist you in seeing the patterns a bit easier.

1 Helium light band

2 Helium light bands

3 Helium light bands

4 Helium light bands

0.0000116"
0.0000232"
0.0000348"
0.0000464"

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