What Oring grease do you use?

[happy-diver]

Yeah 111 tightens up the loop real good, fixes positive negative test issues nice
but do not tell by the new book rebreather pilots they will call the bomb squad
but can tighten up some dsvs a bit much


"Inorganic thickeners are a type of thickener that does not contain any soap. Instead, they
use inorganic compounds, such as silica, clay, or calcium sulfonate, to thicken the base oil."

https://www.dupont.com/content/dam/dupont/amer/us/en/Molykote/public/documents/en/MOLYKOTE_111_Compound_22-1087O-01.pdf

but don't concern yourself with that stuff

here is the important one, is halal is good

https://www.dupont.com/content/dam/dupont/amer/us/en/Molykote/public/documents/en/Molykote%20Halal%202024%20X%20FMS.pdf

Ha ha ha and I even wiggled myself into the local Lebanese pizza shop to service their machines with the stuff

The wife, a terrific woman, looked like a brunette Shakira
Free pizzas for life, but that was a few half a lifetimes ago
Near the beach used to go lunch swimming with the staff

 

[bvanant]

Triboloube (which is not flourosilicone but rather perfluoro-ether) is good for ALL types of o-rings. Most photographers have numerous o-rings (housing, strobe, focus light etc.) so having one for all uses is a plus.
Bill

 

[Germie]

Yeah 111 tightens up the loop real good, fixes positive negative test issues nice
but do not tell by the new book rebreather pilots they will call the bomb squad
but can tighten up some dsvs a bit much

Hmmm, I already did several times to students I really like Molykote for ccr's.

 

[Ardy]

Triboloube (which is not flourosilicone but rather perfluoro-ether) is good for ALL types of o-rings. Most photographers have numerous o-rings (housing, strobe, focus light etc.) so having one for all uses is a plus.
Bill

Hi Bill just did a search in Australia and came up with Tribolube 71 but there were several other numbers. Which one do you use?

 

[Feye]

Just for information:
Krytox GPL 205 for regs and related.
Dow Corning high vacuum grease for water sealing.

 

[bvanant]

For most seals I use the TL 71. TL66 is for static situations only. TL71 can be used in closed circuit rebreathers but the 66 is only for open circuit.
Bill

 

[happy-diver]

I've got a full fat syringe of BRAYCOTE 640AC what can I use, should I do with it?

https://msdspds.castrol.com/bpglis/FusionPDS.nsf/Files/031709F3A48E912280257E0A00589464/$File/BPXE-9VKKPE.pdf

TDS​

DescriptionCastrol Braycote™ 640 AC is a white, smooth, homogeneous NLGI Grade 2 grease based upon a blend of aperfluoroether base oil and a tetrafluoroethylene telomer. Castrol Brayco IC X-100 (previously named Fluoroclean™X100) can be used to remove this lubricant. Refer to the data sheets for information regarding these products.ApplicationBraycote 640A C is designed as an oxidizer and propellant compatible grease suitable for use in aerospace vehicles,spacecraft, rocket and aircraft engines and associated ground support equipment, oxygen equipment, and transportequipment. Braycote 640AC is typically used in the lubrication of threaded fasteners, connectors, valves, gaskets,elastomers and bearings. Perfluorinated greases, in general, exhibit excellent shelf lives due to their intrinsic inertness.

Tribolube 66 On Aerospace Lubricants, Inc.

Browse Tribolube 66 in the Aerospace Lubricants, Inc. catalog including Item #,Item Name,List Price

syntheticlubricants.aerospacelubricants.com

​

TDS​

Tribolube 66
more
Tribolube-66 is intended for use in mild to high pressure systems where nonreactive with LOX and
GOX is required, strong acids, oxidizers, fuels, and solvents is required. Is qualified to MIL-PRF-27617,
Type 1. Although this lubricant is very inert, newly exposed rubbing surfaces of aluminum and
magnesium may react with the greases under certain conditions.Tribolube-66

Item # PC71-0007.T, Tribolube 71, 7 gm. Tube On Aerospace Lubricants, Inc.

Browse Item # PC71-0007.T, Tribolube 71, 7 gm. Tube in the Aerospace Lubricants, Inc. catalog including Item #,Item Name,Description,Temperature Range,NLGI No.,Low Temperature Torque @-40 ºF. Starting,Low Temperature Torque @-40 ºF. 60 min. R

syntheticlubricants.aerospacelubricants.com

TDS​

Tribolube-71 primary characteristic is that it uses PTFE that has not beenirradiated. Non-irradiated PTFE over long term exposure has demonstrated itdoes not corrode aluminum or anodized aluminum. Tribolube-71 has a verywide temperature range, non-reactive with strong acids, oxygen, fuels, andsolvents. It is an excellent anti-wear, extreme pressure lubricant with long life.Tribolube-71 is qualified to MIL-PRF-27617 types 1, 2, & 3.


Here's the Piranha schpeel

CustomerCare@PiranhaDiveMFG.com​

Tribolube 66​

• Tribolube 66 replaces the Christolube mcg 129 and 129N
• A non-toxic, oxygen compatible lubricant
• Designed specifically for open circuit scuba diving systems
• Intended for use in mild to high pressure systems where nonreactive with LOX and GOX is required, strong acids, oxidizers, fuels, and solvents is required.
• Qualified to MIL-PRF-27617, Type 1.
• Although this lubricant is very inert, newly exposed rubbing surfaces of aluminum and magnesium may react with the greases under certain conditions.
• TRIBOLUBE 66 is only for static applications. This grease is also a PFPE oil that is thickened with PFPE, but has a thicker viscosity. The grease will thicken and in cold conditions can cause a sluggish response, due to the fact that it's operating range is not as wide.
• Made in the USA

Tribolube 71​

• Tribolube 71 lubricant is not water soluble and is inert
• Excellent choice for rebreather divers
• Use in your valves, manifolds and regulator parts
• Use on your spg and/or your gauge connections!
• Using Tribolube 71 you don't have to worry about did you use the proper lubricant or not
• This is a 2 oz syringe
• Great for either working at home or storing in a dive kit
• Tribolube 71 is O2 safe and are compatible with all o-rings and materials used in the scuba industry
• Tribolube 71 is specifically designed for Nitrox open and closed circuit diving systems and is LOX/GOX compatible.

Does this make sense as it applies to open and closed circuit, static and dynamic
or are they trying to get you got you by the short and curlies by feeding you hay

Do the thumb and forefinger test and if it feels the same as all the other greases you tested it passes

I'm sure Old Mother Hubbard still has something in her cupboard

 

[mr_v]

Agree DOW Molykote 111 is a far superior silicone grease.

And no not all silicone greases are the same. If you have ever used Molykote 111 you will instantly feel a difference compared the generic silicone grease like Trident, etc.

Molykote 111 is all I use on all my O-rings for cameras, lights, DPV's, Rebreathers, regs, ect. Only exception is for o2 clean or silicon o-rings then I use Christo lube 129

I discovered Molykote 111 several days ago, and I am convert.

If you told me that I could love silicone grease, I would say that you were crazy, but after trying Molykote 111 on a test DSV, I spent several hours replacing Tribolube 71 with M111 all around my loop. M111 tightens up all connections, does not leave the white residue - everything I needed. Meg head goes in and out like butter, ADV and DSV levers are pleasure to touch. Wow.

 

[bvanant]

my impression is that Dow/Molykote 111 is not O2 safe.
BIll

 

[profmason]

I use Infinx MRO 205 on everything for scuba. It is a Halocarbon PFPE formula thickened with PTFE. Oxygen safe and is similar to krytox 205. I have used Infinx MRO 207 on static orings, but it is a hassle to keep two greases. (207 is more viscous then 205) These are the same greases I run in hybrid / liquid propellant rocket motors, so I am confident in their oxygen stability. (Used to use krytox, but started buying from infinx post covid) 207 handles higher temperatures, but doesn't like the cold.

Infinx MRO 20x series are also available on amazon for ~$25 for 2oz, so a significant savings over conventional O2 service lubricants.