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Hi Peter,
I am about to embark on o-ring replacement in my pressure-tuned LS60.
I have an o-ring kit which covers the 32 & 34mm sizes.
But I am not sure what type of grease to use. Was the grease provided to you by Lunt identified in any way?
The grease used should have two qualities - it should not liquify at higher temperatures, and it should not emit vapours which might form a coating on the etalon surfaces.
If your grease is not labelled I will send an enquiry to Bintel (where I bought the scope), or Lunt.
cheers Phil
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