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Borosilicate sight glass tubing, cut to length. OD of tubing = 19 mm.
- Only fits 51-3/16" sight glass assemblies
- Please measure the sight glass ports on your tank to make sure we send you the correct size tubing!
- Measure from the TOP of the top tri-clamp ferrule, to the TOP of the bottom tri-clamp ferrule.
- Please do not measure the glass itself.
- This sight glass tubing will ONLY fit 51-3/16" sight glass assemblies, as measured using the method above.