Dow Corning Vacuum Lubricant 5.3oz Tube

I have been using this stuff for many years as a high performance grease/lubricant. Keeps working under conditions other lesser lubes would fail, especially cold. I actually use it as a plumbing pipe dope that lets you disassemble easily. When I rebuild a gate valve, parts get lubed with this and the valve lasts much longer. Solved a problem with failing hot water mixing valves that kept freezing up because of mineral build up (much sooner than it should because I have city water that is not hard) by lightly lubing the innards with this stuff. No more mineral build up, no more failing valve and cold showers. Great for preventing galling. I always have a tube handy.

We use this grease on the Transair fittings for plumbing of our compressed air system. Really helps when we rebuild the fittings with new o-rings, increase the margin of error you can allow when trying to smooth the surface the o-ring seals too. Helps the seals last longer too, we have a lot of oil in our system and our seals have lasted longer once we started using this. It does not take away all of the need for surface prepping though. If you have a long of oxidation/damage, you still need to sand it somewhat smooth.

I was a chemistry major (and philosophy major, and a minor in biology) in college. I used Dow Corning Stopcock Grease constantly in the lab. Now that I am working on cars and motorcycles a lot in my spare time, I find many uses for this product in my shop. This is probably not an endorsement Dow Corning wants to see, but honestly, this product is excellent and is inert to almost everything, and I was in college in the early to mid 1970's when I started using it in the lab, and it has changed not one bit since then as far as I can tell.

I have used Dow Corning High Vacuum Grease in my 33 year career as a scientist. It is primarily used for lubricating o-rings on vacuum systems, as well as for a temporary lubricant/sealant for ground glass stoppers, stopcocks, and plastic and glass desiccator jars. I've ordered from 2 different vendors here listing Dow Corning High Vacuum Grease and show a photo of the DC product. Both shipped DuPont Molykote. Note my second pic shows a sticker for stocking this for the Dow Corning Product. The product appears identical and works identically to Dow Corning's. One scientific products supplier, Hampton Research, explains as follows: "Formally called Dow Corning High Vacuum Grease or Dow Corning High Vacuum Grease 976V, the name has changed, but not the formulation. The merger and then splitting of the DowDupont companies now have this grease under the DuPont MOLYKOTE line of greases."

I've been using this stuff for years. It's the best dielectric grease for electrical connections and for o-ring seals in corrosive environments. It's thick and gives a feeling of high solids, and never washes away. In fact, the only drawback is that it is really really difficult to wash it off your hands. Even when you think you have it all off, once they are dry you will realize you have a slippery film on your hands. I usually have to wash 4 times to get it all off. And if you touch anything like a hand rail, you'll pick up that slippery feeling every time you touch that handrail until you clean it off.

same stuff I have used for years, different labeling

Works as advertised

Easy to use tube, works great and expect to have us good on vacuum lube for awhile now.