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Home > Classifieds > Astromart Classifieds > Telescope - Reflectors > Classified #190563

For Sale: 5.3 oz containers Dow Corning High Vacuum Grease (sale pending)

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This was the fastest response I done ever got to an ad. -greg nowell

Hello to the Newtonian crowd:

I'm an sct guy and do to a recent transaction have found myself overwhelmed with Dow Corning High Vacuum Grease. SCT owners use this to correct mirror flop, a small amount on the baffle tube takes up the very small space between the hole in the mirror and the baffle tube, eliminating the small side to side movements that cause mirror flop.

This grease is good because it doesn't outgas. Although some silicone greases "run" or "flow" and are not recommended for optics, this stuff does not. It is viable at a huge range of temperatures, if you were out observing and were beyond the low or high end range of this grease you'd be dead. It's not recommended for such applications as worm drive gears. Sct owners do put it on focusing mechanisms and it might be worth a try there...or any other weird projects you have. It will last forever.

Anyhow this is probably a product for those who know EXACTLY what it is--machinists and people who own their own lathes etc. The lowest 2 oz tube price I have seen is $21 plus shipping. My price Con USA USPS for the 5.3 oz tube, unopened in the original dow corning box,
is $30 shipped. I have two for sale. Hope to hear from you, I deal in personal checks or money orders only.

Clear skies,
Greg Nowell

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