Krytox Lube

[Zippy]

Now that those that lubed their guns with Krytox have been using them for awhile I'm wondering how they are holding up. Thoughts comments? Looking to tear down the R9 soon and on the fence with what to lube with. I did a D34 with a full lube and it was smooth put about 1000 rounds through it but traded it off. So looking for feedback on long term use.

[ericw]

Over a year now on my Krytox lubed .22 cal RWS 350P and all is good.  Thousands of rounds through it and it still shoots @ 23FPE and accuracy is good.

[scooterman]

Just in the past week I took apart my NPSS .22 rifle.  Needed to put in some barrel washers and while I had the stock off pulled it apart and put on a new seal.  Cleaned everything up and lubed the new seal with Krytox.  Was hoping for a few more fps but actually lost 13 fps with cphp's at an avg. of 704 compared to 717 before Krytox.   Have  just over 100 rounds thru it and maybe the seal isn't worn in yet.  I'm thinking of doing my 350 with Krytox very soon so it's good to know Krytox won't hurt anything.

[nced]

Now that those that lubed their guns with Krytox have been using them for awhile I'm wondering how they are holding up. Thoughts comments? Looking to tear down the R9 soon and on the fence with what to lube with. I did a D34 with a full lube and it was smooth put about 1000 rounds through it but traded it off. So looking for feedback on long term use.

My .177 R9 has been "full Krytox lubed" since I "discovered" the GPL205 grease in December and all is still working great after shooting a case of CPLs (about 15,000 shots)! The GPL205 (so far) has been a "apply it/forget it" lube that isn't staining black, doesn't diesel, and lasts through a LOT of shots. LOL.....a while back I found a 2oz tube of the stuff on EBay for $38 and free shipping so I ordered the "many years supply" of the stuff since you don't need much! Matter of fact, the initial 1/2oz tube I bought had enouch lube to completely grease all sliding surfaces of my R9 (spring, guide piston, seal, barrel pivots, cocking shoe, etc.) and still had this much left over........

Here's a pic of the $38 2oz tube I bought from an EBay seller........


 

[nced]

Just in the past week I took apart my NPSS .22 rifle.  Needed to put in some barrel washers and while I had the stock off pulled it apart and put on a new seal.  Cleaned everything up and lubed the new seal with Krytox.  Was hoping for a few more fps but actually lost 13 fps with cphp's at an avg. of 704 compared to 717 before Krytox.   Have  just over 100 rounds thru it and maybe the seal isn't worn in yet.  I'm thinking of doing my 350 with Krytox very soon so it's good to know Krytox won't hurt anything.

Krytox won't combust so it doesn't contribute to velocity like petro based lubes can. Losing some velocity can be a definite possibility if your previous lube was giving a "combustion boost" via dieseling, however I haven't noticed any velocity reduction after COMPLETELY lubing my .177 R9 with Krytox GPL 205. Matter of fact, the velocity strings are extremely consistent as is the poi!

[scooterman]

Now that those that lubed their guns with Krytox have been using them for awhile I'm wondering how they are holding up. Thoughts comments? Looking to tear down the R9 soon and on the fence with what to lube with. I did a D34 with a full lube and it was smooth put about 1000 rounds through it but traded it off. So looking for feedback on long term use.

My .177 R9 has been "full Krytox lubed" since I "discovered" the GPL205 grease in December and all is still working great after shooting a case of CPLs (about 15,000 shots)! The GPL205 (so far) has been a "apply it/forget it" lube that isn't staining black, doesn't diesel, and lasts through a LOT of shots. LOL.....a while back I found a 2oz tube of the stuff on EBay for $38 and free shipping so I ordered the "many years supply" of the stuff since you don't need much! Matter of fact, the initial 1/2oz tube I bought had enouch lube to completely grease all sliding surfaces of my R9 (spring, guide piston, seal, barrel pivots, cocking shoe, etc.) and still had this much left over........

Here's a pic of the $38 2oz tube I bought from an EBay seller........


 

I think I must have bought my Krytox from the same seller, same price.  Good to know some people like it and I haven't wasted my money.

[Paul68]

Another member has found the Krytox does not have the moisture resisting properties regular lubes have. Something to consider.

[SciGuy]

There is a version of Krytox (GPL207) that contains rust inhibitors. It has the same properties of 205 but also deals with moisture issues.  It is not as easy to find but costs the same as the 205.

[nced]

Another member has found the Krytox does not have the moisture resisting properties regular lubes have. Something to consider.

According to this Dupont claim...........
"DuPont™ Krytox® oils and greases are based on perfluoropolyether (PFPE) oils. This series of synthetic fluorinated lubricants are used in extreme conditions such as continuous high temperatures up to 204°C (400°F) and will survive short term peak temperatures of up to 220°C (429°F). Chemically inert and safe for use around hazardous chemicals, these lubricants are nonflammable and are also safe for use in oxygen service. Krytox® oils and greases do not damage plastics or elastomers nor cause corrosion to metals. They are commonly used as lubricants in aerospace, automotive, industrial and semiconductor applications as well as in solving many other routine lubrication problems. In addition, they provide exceptionally long lifetimes in sealed-for-life bearings and extend relubrication intervals in bearings that require relubrication.

Anywhoo......I'll smear some on a piece of steel and check out if it rusts in water just for grinns and post the results after a week or so.

[nced]

Another member has found the Krytox does not have the moisture resisting properties regular lubes have. Something to consider.

According to this Dupont claim...........
"DuPont™ Krytox® oils and greases are based on perfluoropolyether (PFPE) oils. This series of synthetic fluorinated lubricants are used in extreme conditions such as continuous high temperatures up to 204°C (400°F) and will survive short term peak temperatures of up to 220°C (429°F). Chemically inert and safe for use around hazardous chemicals, these lubricants are nonflammable and are also safe for use in oxygen service. Krytox® oils and greases do not damage plastics or elastomers nor cause corrosion to metals. They are commonly used as lubricants in aerospace, automotive, industrial and semiconductor applications as well as in solving many other routine lubrication problems. In addition, they provide exceptionally long lifetimes in sealed-for-life bearings and extend relubrication intervals in bearings that require relubrication.

Anywhoo......I'll smear some on a piece of steel and check out if it rusts in water just for grinns and post the results after a week or so.

Here's the test.......
I sanded two 10d steel finish nails, left one bare and coated the other with a THIN film of Krytox GPL205, then wrapped both with a piece of paper towel soaked in salt water, then left both on a table to dry out and see if both absorb moisture from the air (it's humid upstairs at my place). Here's a pic of the start of the test........


Now lets see what happens! 

P.S.   The questions about Krytox did prompt me to consider trying the GPL 105 (or 107) which is an oil instead of a thickened grease for lubing my piston seal and receiver/compression tube ID. The GPL205 grease is working fine as a lube for the other parts, however a non-dieseling piston seal "OIL" might be better than grease.

[Zippy]

Then corrosion is what I'm concerned with but doing a full tune with it I don't see a problem tube will be burnished all pivots spring piston seal...and my guns are case stored with a balistol wipe down so I'm going to do it. I know the D34 I did a full lube and it was night and day. I was going to do the R9 but I took the R1 down yesterday to add some Tim Einck bling and found a broke stock mounting lug. So now it's in more pieces ordered a new spring kit will tig the mounting lug back on and do a full lube with krytox on that. See how the 30 year old girl likes that. Poor old girl has it coming that's for sure.

[stalwart]

Thanks for doing the test, Ed.

I'm watching with more than casual interest... I'm about to treat my "old girl" (plain jane R10) to well deserved TLC, and have o-ring pistoned projects to test it on.

At these prices, I only want to do this once.

[the1stkim]

I wonder if there is anywhere to buy this stuff locally

[NitroBobby]

I wonder if there is anywhere to buy this stuff locally

got a Grainger near by?

http://www.grainger.com/Grainger/LOCTITE-PFPE-Lubricant-4XZ69?Pid=search

[Zippy]

I got mine at McMaster Carr but ebay seems to have the best deals.

[Paul68]

Another member has found the Krytox does not have the moisture resisting properties regular lubes have. Something to consider.

According to this Dupont claim...........
"DuPont™ Krytox® oils and greases are based on perfluoropolyether (PFPE) oils. This series of synthetic fluorinated lubricants are used in extreme conditions such as continuous high temperatures up to 204°C (400°F) and will survive short term peak temperatures of up to 220°C (429°F). Chemically inert and safe for use around hazardous chemicals, these lubricants are nonflammable and are also safe for use in oxygen service. Krytox® oils and greases do not damage plastics or elastomers nor cause corrosion to metals. They are commonly used as lubricants in aerospace, automotive, industrial and semiconductor applications as well as in solving many other routine lubrication problems. In addition, they provide exceptionally long lifetimes in sealed-for-life bearings and extend relubrication intervals in bearings that require relubrication.

Anywhoo......I'll smear some on a piece of steel and check out if it rusts in water just for grinns and post the results after a week or so.

Here's the test.......
I sanded two 10d steel finish nails, left one bare and coated the other with a THIN film of Krytox GPL205, then wrapped both with a piece of paper towel soaked in salt water, then left both on a table to dry out and see if both absorb moisture from the air (it's humid upstairs at my place). Here's a pic of the start of the test........

Now lets see what happens! 

P.S.   The questions about Krytox did prompt me to consider trying the GPL 105 (or 107) which is an oil instead of a thickened grease for lubing my piston seal and receiver/compression tube ID. The GPL205 grease is working fine as a lube for the other parts, however a non-dieseling piston seal "OIL" might be better than grease.

Thanks Ed. Look forward to the results. After Mpac found his discarded and Krytox lubed springs covered in heavy rust after exposure to what I assume was high humidity, your controlled test should help a lot.

[the1stkim]

ok grainger Ill pick some up tommorrow.

[nced]

" Thanks Ed. Look forward to the results. After Mpac found his discarded and Krytox lubed springs covered in heavy rust after exposure to what I assume was high humidi"
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Here's the test.......
I sanded two 10d steel finish nails, left one bare and coated the other with a THIN film of Krytox GPL205, then wrapped both with a piece of paper towel soaked in salt water, then left both on a table to dry out and see if both absorb moisture from the air (it's humid upstairs at my place). Here's a pic of the start of the test........

Now lets see what happens! 

P.S.   The questions about Krytox did prompt me to consider trying the GPL 105 (or 107) which is an oil instead of a thickened grease for lubing my piston seal and receiver/compression tube ID. The GPL205 grease is working fine as a lube for the other parts, however a non-dieseling piston seal "OIL" might be better than grease.
[/quote]

Test completed and it didn't take long. The original test was using a couple 10D finish nails and while they did show a bit of difference in corrosion.......

I'm thinking that these old nails may have had some sort of coating that inhibited SOME rusting.

A couple days later I found some 12D bright common nails, de-greased them, and did the same test. Here is the result..........

While the Krytox GPL205 certainly isn't a "rust inhibitor", it certainly does add some corrosion protection.

As was mentioned in another reply, Dupont also supplies a "GPL anti corrosion grease" for roughly the same price........
http://www.netmercury.com/Products/GPL-Anti-Corrorsion....GPL 220,221,222 etc and it seems that the different GPL numbers designate the thickness of the grease..........

Notice this spec sheet.............
http://www2.dupont.com/Lubricants/en_US/uses_apps/Product_Guide.html
Bearings   GPL 224   –60°F to +355°F   –30°F to +300°F   68   Safe for use with common
acids, bases, solvents and reactive gases. Won’t wash out from water, steam or solvents. Compatible with all seals.

Anywhoo.......to date I've had no corrosion issues using the Krytox GPL 205 for completely lubing my R9, however I'm considering the use of thinner GPL 222 on my piston seals/receiver tube ID, especially since it's roughly the same price of about $40 for a 2oz tube (many years supply). Think I'll continue using the GPL 205 for all other lubing however and "keep an eye on things".

Personally, I don't see where Krytox GPL205,206 grease will cause corrosion since the stuff is recommended as a "bearing lube" and as an oring lube. Seems that if Krytox grease allowed oring groove corrosion then it wouldn't be good for orings.
DuPontTM Krytox ® GPL 206 Grease
The GPL 206 grease is PTFE thickened, contains no additives and can be used on components that come in contact with chemicals. Typical applications include valves, instruments or bearings in contact with chemicals including alcohols, ammonia, solvents, steam, acids and bases, and oxygen systems including LOX and GOX. They are commonly used as seal and o-ring lubricants and are compatible with all types of seals.
 

[ericw]

Thanks for the NO BS test nced!  Good job.

[OleTomCat]

I use it in all the guns I service, as long as you don't drop them in a pond or puddle, like someone on here did, you should be ok...