Krytox - HPA Grease?

[badger5th]

I am curious if anyone has tried Krytox greases/oils for HPA use. I was at a civil war reenactment this weekend and spoke with another reenactor who is a mechanical engineering consultant for Electric Boat in Groton, CT. He mentioned he has done consulting/design work for the Navy doing stuff with HPA as well as high pressure oxygen. I mentioned my airgun interest and how HPA tanks and PCP's are common usage and what he knows about proper lubes for HP gases. He mentioned products by Krytox are standard spec for Navy high pressure gas service that contain oxygen.

Krytox™ Performance Lubricants for Oxygen Services

Learn how Krytox™ oils and greases are nonflammable, chemically inert, thermally stable, and safe for use in all areas of oxygen service.

www.krytox.com

Has anyone tried it? It is expensive though, about $100 for 2oz tube. He said they buy it by the tub, but that's the gov'mint. Regards

 

[Ca_Varminter]

Yes I have used it...
I have a small tube of it... Required lube of an old high speed printer...
Very Pricey..$$$$$$
Synthetic lube base with Teflon..

Stuart

 

[nervoustrig]

For static O-rings, there is zero reason to use Krytox. Silicone grease (e.g. automotive dielectric grease) is safe, effective, and inexpensive.

For dynamic O-rings, maybe.

For airguns, Krytox usually comes up in the context of lubing synthetic piston seals of springers. In that application its lubricity, stability, and resistance to detonation are beneficial.

 

[Sublimemoon0000]

Speaking of grease, I'd like to lube my hpa tanks before screwing them in. Taking them on and off is a little difficult, seems more so than it should be, both on my Sig Virtus and MCX.
Would it be ok to grease the threads on my tanks? If so a silicone grease I'm guessing?
I apologize for piggybacking this post , you guys are talking grease I figured I'd ask. Thank you

 

[Bigragu]

Speaking of grease, I'd like to lube my hpa tanks before screwing them in. Taking them on and off is a little difficult, seems more so than it should be, both on my Sig Virtus and MCX.
Would it be ok to grease the threads on my tanks? If so a silicone grease I'm guessing?
I apologize for piggybacking this post , you guys are talking grease I figured I'd ask. Thank you

I’d like to know about the lubing of the threads also, particularly the threads that a guns bottle threads into thats mounted on the gun. I’ve wondered about using nickel antiseize but could not find if nickel anti seize has petroleum properties in it.

The bottle on my MK2 impact is getting to be a chore to unthread. I’d like to find what’s best to help lube that up

 

[nervoustrig]

I do my best to avoid turning threaded connections under pressure so I haven’t had reason to explore the performance of different lubricants but I wanted to comment on a few different ones:

1. Silicone – as good as it is for synthetic materials (elastomers and plastics) against metal, it is terrible for metal on metal.

2. Anti-seize – the ones I’ve used have a flammable carrier.

3. Krytox – inflammable like silicone but reportedly much better in terms of lubricating metal/metal interfaces. I’ve only used it a couple of times on bolts that were hard to pull and was unimpressed but it’s one I would be inclined to try for a pressurized threaded connection.

4. Dry film lubricant – Something like molybdenum disulfide or tungsten disulfide has the desired inflammability and excellent lubricating properties, at least on hard metals. I don’t know about softer metals like aluminum but it’s one to consider trying.

 

[jarmstrong]

I use Ultimox 226 instead of Kyrtox

MicroLubrol Ultimox-226 Perfluoropolyether PFPE PTFE Grease 60g Jar

MicroLubrol™ ULTIMOX™ 226 Perfluorypolyether PFPE / PTFE Grease w/ Corrosion Inhibitor.<BR>DROP-IN REPLACEMENT FOR GPL-205 and GPL-206 in Automotive Applications.<BR>DROP-IN REPLACEMENT FOR GPL-226 in Bearing Lubrication Applications.

www.microlubrol.com

or buy from ebay for $30 for 1.4 oz this small tub last a long time, I had mine for about 5 yrs, still 1/4 full

MicroLubrol Ultimox 226 Perfluoropolyether PFPE PTFE Grease Auto O2 Krytox 205 for sale online | eBay

Find many great new & used options and get the best deals for MicroLubrol Ultimox 226 Perfluoropolyether PFPE PTFE Grease Auto O2 Krytox 205 at the best online prices at eBay! Free shipping for many products!

www.ebay.com

 

[Hateful McNasty]

A little goes a long way a small tube last a few spring jobs + periodic lube services.

But... What i seeing is it dont last. Matter of fact i just re lubed the r9 so i guess im saying it dont have the staying power as a good moly would . But wile the krytox is on fresh its as smooth as butter
Thing is you just got to try it on a tune job and judge for your self.

In a springer im leaning to go back to moly for longevity over frequently refreshen it with the krytox .

I think as well pcp or oring assembly just sillycone does the job. ( And cheap.)

 

[Sublimemoon0000]

I used some molybdenum disulfide grease on my tank threads just a few hours ago. I had a tube anyway that I use on the externals of my Springer, (chisels and pivot points). It seems to work great, it's much easier to remove the tanks now, however, ofcourse there is some of the grease getting on the orings around the regulator, I don't know if this is a bad thing or not. I'm not sure if it will get through into the gun and mess things up, or if it will just stay on the outside. It does help with the threads though

 

[Bigragu]

I do my best to avoid turning threaded connections under pressure so I haven’t had reason to explore the performance of different lubricants but I wanted to comment on a few different ones:

1. Silicone – as good as it is for synthetic materials (elastomers and plastics) against metal, it is terrible for metal on metal.

2. Anti-seize – the ones I’ve used have a flammable carrier.

3. Krytox – inflammable like silicone but reportedly much better in terms of lubricating metal/metal interfaces. I’ve only used it a couple of times on bolts that were hard to pull and was unimpressed but it’s one I would be inclined to try for a pressurized threaded connection.

4. Dry film lubricant – Something like molybdenum disulfide or tungsten disulfide has the desired inflammability and excellent lubricating properties, at least on hard metals. I don’t know about softer metals like aluminum but it’s one to consider trying.

Thanks for validating the non use of anti seize on threads dealing with HPA

 

[Scouty]

This thread reminded me of a small tube of Christo MCG-111 that a local Scuba shop gave me some years ago.

Any input on if it is appropriate for use in PCPs? And what parts if so?