Slipper seal measurement

In order to monitor the wear rate of the slipper seal material, technicians must measure the thickness of the seals on returned cold heads. These seals are removed from the first stage displacer, cut, measured, and recorded.

PROCEDURE NEEDED

First stage seal measurement

The first stage seal must be removed and cut to measure. This is done by cutting with a razor blade and then measuring with a caliper for thickness.

1. Remove the seal from the dispalcer.

2. Take the seal back to the QC bench for processing.

3. Cut the seal in half using a razor blade.

4. Using a calipers, measure the thickness of the seal and record on the paperwork.

5. In Airtable record the seal thickness in the seal thickness airtable form.(i dont think this exists )

IMAGES NEEDED