Every few days I'll notice a stream of silicone oil down half the length of its air tank. No drop in pressure that I can notice. I lube up the orings pretty good and coat the inside of the tanks. Out of all my pcps (about 10) this is the first time silicone oil has managed to get out of the tank. It's a aea megalodon. Has this happen to you before? Has to be a very very almost non existent slow leak? Because the pressure is at the same spot if not a tad higher.
AEA My gun oozes silicone oil sometimes
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use less oil, with PCP's, only use what is needed, excessive oil will cause dirt to stick and collect on the gun, I use 5-10 drops of Silicone oil Every 20 fills of air, applied through the fill port hose, it is only for lubing the O-rings just enough internally, to much can cause O-rings to swell and will create a possible leak, so in this case too much of a good thing is bad..... go a bit easier on the oil....
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I have an Element max. Went from 330cc tank to 600cc. It was a new tank from the pellet shop. Wiped the inside of the tank out to remove excess oil. After instalation for a few days it seeped oil out of the front cap. Figured it was just squeezing the bajezus out of the cap threads.
Fine now.
Fine now.
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Ok thanks, it was confusing how it could even get out of a sealed tank. I didn't even think about the threads having the oil on them too. Which they do. And the o-ring is before the threads I believe, that's what it is.
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I've had a couple of conversations with a very well respected air rifle maker. He told me to never, ever use silicone on his air rifles. His primary issue was the seizing of metal parts that can be caused by silicone if used in a high temp/high pressure environment. With that information, along with other research, I have formed an opinion. Number one, silicone is not a metal lube and should never be used as such. And indeed, in a high temp setting, it will cause metals to seize. For electrical components, plastic and rubber, it is fine, as long as it cannot migrate to metal-to-metal surfaces. O rings in a static environment don't need lubricant. If moving parts are in contact with an O ring, but not high temp/pressure, a very small amount of silicone lube is okay. If you can see the lube on it, then it's probably too much. If in doubt, clean and dry is usually fine. These are just my thoughts, and my wife says I'm usually wrong.
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Some applications do better with silicone grease instead of oil. I have a couple rifles that weep a bit of oil like yours that have never leaked a drop of air for like 2 years.
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This is very true. A few years ago I was at the trap range and I had nothing but silicone so I put a little on my break open shotgun. By the end of the round I could hardly open the gun. Learned quick it was that silicone on metal to metal contact. Cleaned that all off and was good to go. Yes terrible for metal to metal lube.
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What do you mean by "silicone"?
Is that "silicone" oil, or "silicone" grease?
Sorry if this sounds pedantic but those making the posts appear to be highly credible so my intention is to understand clearly what is being said.
For reference, I have used Permatex Industrial Super Lube Item No. 82325 Synthetic With Teflon grease which is a Food Grade USDA rated H-1. We used that product for many years in electrical, O ring lubrication and high-pressure air applications.
I understand that it has been replaced by the Synco Chemical Corporation product Super Lube Part Number CA21030 that I also have on hand.
The two appear to be identical and both appear to perform the same on high loading mechanical parts, including high-pressure screw threads.
I also use Super Lube Silicone Oil 100 cSt Part Number 56104 for "oiling" applications such as periodic drops into Foster couplings and as an anti-corrosive into PCP fillers.
Is anyone aware of any issues regarding the application for these products?
It may be that someone is unaware that "silicone oil" and "silicone grease" are terms without useful context?
Is that "silicone" oil, or "silicone" grease?
Sorry if this sounds pedantic but those making the posts appear to be highly credible so my intention is to understand clearly what is being said.
For reference, I have used Permatex Industrial Super Lube Item No. 82325 Synthetic With Teflon grease which is a Food Grade USDA rated H-1. We used that product for many years in electrical, O ring lubrication and high-pressure air applications.
I understand that it has been replaced by the Synco Chemical Corporation product Super Lube Part Number CA21030 that I also have on hand.
The two appear to be identical and both appear to perform the same on high loading mechanical parts, including high-pressure screw threads.
I also use Super Lube Silicone Oil 100 cSt Part Number 56104 for "oiling" applications such as periodic drops into Foster couplings and as an anti-corrosive into PCP fillers.
Is anyone aware of any issues regarding the application for these products?
It may be that someone is unaware that "silicone oil" and "silicone grease" are terms without useful context?
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I might be missing something, but I just assumed everyone that maintains their own pcps would understand the difference between grease and oil? There are a lot of different manufacturers that make silicone products for the purpose of sealing in varying viscosities and characteristics.
Here is what I would call Silicon Oil:
Super Lube 4 oz. Silicone Oil Bottle 56104 - The Home Depot
Visit The Home Depot to buy Super Lube 4 Oz. Bottle Oil with PTFE Lubricant 51004
www.homedepot.com
And here is what I consider Silicone Grease:
Super Lube 3 oz. Tube Silicone Lubricating Grease with Syncolon (PTFE) 92003 - The Home Depot
Visit The Home Depot to buy Super Lube Silicone Lubricating Grease 3 Oz. Tube - Per Each 92003
www.homedepot.com
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Well, many years as a technician, service manager, college instructor, Power Engineer, have shown me that people often don't know much about many things taken for granted by those working in technical fields.I might be missing something, but I just assumed everyone that maintains their own pcps would understand the difference between grease and oil? There are a lot of different manufacturers that make silicone products for the purpose of sealing in varying viscosities and characteristics.
Here is what I would call Silicon Oil:
Super Lube 4 oz. Silicone Oil Bottle 56104 - The Home Depot
Visit The Home Depot to buy Super Lube 4 Oz. Bottle Oil with PTFE Lubricant 51004www.homedepot.com
And here is what I consider Silicone Grease:
Super Lube 3 oz. Tube Silicone Lubricating Grease with Syncolon (PTFE) 92003 - The Home Depot
Visit The Home Depot to buy Super Lube Silicone Lubricating Grease 3 Oz. Tube - Per Each 92003www.homedepot.com
IME, most people think that grease is just super thick oil, and that "white grease" is better than other colors. People will start a fight if told that stainless steel fasteners are usually a bad choice.
I agree with you regarding how you describe oils and greases, but The Dunning-Kruger Effect lives in all of us, so I try to describe what I can.
Just to be clear, I take no exception to anything that you said and I appreciate the clarification.
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I was a plant operator in a pertro chem facility, we were trained to have zero tolerance when it came to the correct lubes and sealants etc. I get where you are coming from, I was nearly sprayed by some very nasty chemicals more than once after someone decided to change what products were used in certain processes. Fortunately pcps run more into what is your favorite lubrication or sealant and fights ensue lol. We dont have to worry so much about what brand etc is used, so long as you dont use anything that can splode while filling.
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Stationary Engineer?
You will have a very comprehensive appreciation of these subjects.
I agree that PCPs aren't a picky lubrication issue, but it can still be useful to cross check these questions, as you were kind enough to do, and maybe share a bit of what we know.
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Silicone grease for O rings and for metal to metal part with no HPA involved, just use a molly grease.
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As I understand it, silicone is a synthetic product that can be introduced into various substances, i.e., grease, oil, etc. I assume that it's properties are essentially the same in each circumstance, and that avoiding metal-to-metal contact is consistent advice. It's use in HPA/heat applications may be fine, as long as it is not used as a metal lube. At least that is my understanding.
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Every time I refill my 14 scba tanks (with my YH),
a drop (or two) ptfe oil in the fill line QD hole.
That was enough so far and the gun orings didn't complained for it as much I know
a drop (or two) ptfe oil in the fill line QD hole.
That was enough so far and the gun orings didn't complained for it as much I know
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the main reason for using Silicone based lubricants in the HPA system is that Silicone lubricants resist combustion at High Air Pressures unlike Petroleum based lubricants that combust under High Air Pressures, yes it is for the seals and O-rings, not for metal to metal lubrication which in the HPA system is not really present except for valve shafts and springs in a PCP, outside of the HPA system I use gun oil lube for metal to metal to keep friction to a minimum and allow easy free movement of parts such as the hammer and trigger mechanisms, Silicone grease for non-moving O-rings and Silicone oil for moving O-rings and fill port seals, keeps the O-rings from hardening, I also do not use Urethane O-rings, they harden and turn to some kind of crud that does not seal and hard to clean out.. .. Dura 7 and Dura 9 buna Nitril O-rings work best....
.. Dura 7 and Dura 9 buna Nitril O-rings work best.... Upvote 0