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 Post subject: lubricants
PostPosted: Sat Jun 11, 2016 12:53 am 
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Joined: Sun Jan 09, 2011 8:07 am
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Location: Central West River Nova Scotia
Do we have any experts who can recommend an oil or grease for viton o rings, in contact with aluminum. Possibly at pressures of up to 3000 psi ? Also steel on steel but with a buna O ring in the end ? I would prefer to buy off the shelf locally.

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 Post subject: Re: lubricants
PostPosted: Sat Jun 11, 2016 5:58 pm 
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Location: United States
I'd say silicone grease but I spoze resident expert rsterne will speak up if there is a better option. I keep silicone grease on hand for this sole purpose. Well, that and non-silicone spark plug boots.


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 Post subject: Re: lubricants
PostPosted: Sat Jun 11, 2016 10:34 pm 
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Location: Alberta Canada
I use 2 products Parkers Oring lube and Molykote 55. Both are thick and lubricate very well. Molykote 55 does have a flammabilty of 1 so I do not usee it within air tube or bottle orings.

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 Post subject: Re: lubricants
PostPosted: Sat Jun 11, 2016 11:47 pm 
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Joe if you can find some Hater Marmalade Lube....no you don't put it on toast lol....
100% synthetic...works great on O-rings

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 Post subject: Re: lubricants
PostPosted: Sun Jun 12, 2016 2:39 am 
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Location: Central West River Nova Scotia
its for a high pressure hand pump, with an aluminum tube. but the piston rod is steel through a steel bushing. So im dealing with steel on steel and viton on aluminum all in the same mechanism. And all the lubricants will eventually come in contact with one another, so therefore I need one lubricant for the whole pump. Petroleum based lube,s are bad for O rings, but silicone grease is useless on steel bushings. Synthetic oil is supposed to work on all applications but Ive read that synthetic oil is not 100% synthetic.
Ithink I may have to bite the bullet and order online. Molykote is supposed to be good for all applications. I think, or Superlube.

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 Post subject: Re: lubricants
PostPosted: Sun Jun 12, 2016 5:06 am 
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Location: Northeastern Ontario
I know this is the obvious, and I mean no offense, but what does the manufacturer recommend, if anything?


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 Post subject: Re: lubricants
PostPosted: Sun Jun 12, 2016 8:34 am 
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Location: Alberta Canada
My 1998 AF pump has only ever seen Parkers Oring lube, and still works flawless. If thats any testiment to how well it works.

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 Post subject: Re: lubricants
PostPosted: Sun Jun 12, 2016 4:55 pm 
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Location: Central West River Nova Scotia
As I mentioned, it has to perform well on metal and not destroy the o ring. Super lube synthetic grease covers both. I have ordered some. and its for a home made pump. Since I'm the manufacturer, I suggest super lube.
Thank,s for all the suggestions.

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 Post subject: Re: lubricants
PostPosted: Sun Jun 12, 2016 8:14 pm 
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Location: Coalmont BC
Kim, I have a question about the "Flammability of 1" for Molykote 55.... Is that the NFPA Rating you are talking about?.... From the MSDS sheet for Molykote 55....

https://www.alcoa.com/fastening_systems ... 20msds.pdf

the second section states....

NFPA Profile: Health 1, Flammability 1, Instability/Reactivity 0.

However when I look at the MSDS sheet for Parker O-Ring Lube....

http://www.parker.com/literature/O-Ring ... 0Olube.pdf

In section XVI it states....

NFPA Hazard Classification: Health 2, Flammability 1, Reactivity 0.

and on the MSDS sheet for Snyco SuperLube....

http://www.super-lube.com/files/pdfs/SD ... EN_sds.pdf

At the top of page 2 it states....

NFPA ratings: Health 0, Flammability 1, Reactivity 0.

Is there something I'm missing?.... I have always used Dow Molykote 55 for all O-rings, including PCPs, is there some reason I should change?

Bob

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 Post subject: Re: lubricants
PostPosted: Sun Jun 12, 2016 10:14 pm 
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Location: Alberta Canada
I had used the Molykote for many down hole tool applications. It was more then a few years ago now, I was working in the US. An American toolhand showed me pictures of a tool that was shop tested and it detonated. Cause pointed to the molykote upon assembly. I never saw documentation. Some of the tool applicatons are tested beyond 10K. In Canada, SOP is testing with N2 for gas testing, water for fluid tests. At that time and I imagine still in the US, Air was used for gas tested tools.
I just choose to error on caution and return back to the Parker Oring lube for any internal applications. JMHO. Flamability of 1 is only a single digit above a 0.

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 Post subject: Re: lubricants
PostPosted: Sun Jun 12, 2016 10:25 pm 
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Location: Coalmont BC
Unless I am reading it wrong (and that is entirely possible).... all three lubes have a flammability of 1 (on a scale of 0-4).... that was kind of my point.... I suppose that is entirely possible and yet have one vastly superior to another in a HPA application?.... Thanks....

Bob

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Dominion Marksman Silver Shield - 5890 x 6000 in 1976, and downhill ever since!
Airsonal;
Too many! Springers, Pumpers, CO2, but I love my PCPs and developing them!
Proud Member of the 2000+fps Club!


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 Post subject: Re: lubricants
PostPosted: Sun Jun 12, 2016 10:33 pm 
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Location: Alberta Canada
rsterne wrote:
Unless I am reading it wrong (and that is entirely possible).... all three lubes have a flammability of 1 (on a scale of 0-4).... that was kind of my point.... I suppose that is entirely possible and yet have one vastly superior to another in a HPA application?.... Thanks....

Bob


No you read it all correctly Bob, and your welcome.

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 Post subject: Re: lubricants
PostPosted: Mon Jun 13, 2016 7:11 am 
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Location: Central West River Nova Scotia
Since the aplication is for a hand pump SSP, there is zero possibility of combustion. The pump compression chamber is aluminum, and the pump stroke is drastically slower than a springer. So any heat generated from the compression stroke, is absorbed by the aluminum quickly, so it should never reach critical temperature for ignition. Since I intend to use synthetic grease or oil or both, theres no chance at all for explosion.
Man I love this forum. There's bound to be an expert available for any question. Thank,s again.

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 Post subject: Re: lubricants
PostPosted: Mon Jun 13, 2016 8:00 am 
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Location: Alberta Canada
Just a tid bit here. Compression of a gas ie air. Causes heat, and a release of pressure causes cold. So its not so much friction of the materials or its speed you speak of Joe. Just another aspect of it. And yes aluminm does disipate heat reletivly quicker then steel.

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 Post subject: Re: lubricants
PostPosted: Mon Jun 13, 2016 8:27 am 
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Take a look for Ktytox GPL in small tubes


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