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All Springer/NP/PCP Air Gun Discussion General => Machine Shop Talk & AG Parts Machining => Topic started by: maverick on July 04, 2011, 12:32:00 PM
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wondering what is the best thing to lube the O rings on the disco and M-rod
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Divers silicone. Pick up a small container at any dive shop, will last you a real long time and is great stuff.
JEff
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....or silicone dielectric from auto parts place.
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can also use plumbers silicon that may be found any place that plumbing supplies are sold.
Gary
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thanks guys....
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just a idea..
how about the stuff made for lubeing rubber...
rubber grease... comes in a Caster or lanolin base..
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I've been using plumbers grease for a long time. Cheaper and more readily available than divers lube and same thing...silicone.
For rings under pressure Crosman lube or 30 wt non detergent motor oil. Both are absorbed by the rings making them swell a bit and giving good high pressure seal.
I like silicone on probe rings because they are exposed and silicone doesn't attract dust. The oils do. Two different applications.
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OK, here is my 2 cents. I've tried a lot of different lubes on o-rings and a lot of the stuff was suggested by some of you folks on here in months past. I think that in static applications (you put it together once and it stays there until you disassemble next time), o-rings are pretty forgiving and will work with just about anything.
But for dynamic applications, like piston seals, it is a lot trickier. But maybe it really isn't. I don't own one, but the Shoebox Compressor uses o-rings on its piston seals and the recommended lube is plain old white lithium grease ! Does the shoebox use polyurethane o-rings? I know a lot of folks swear by polyurethane o-rings even though they are a lot more expensive.
Any thoughts on the dynamic applications or the Shoebox?
Oh, and an engineer I know and trust says that Parker Super O-ring Lube (from an industrial supplier) is the best he has seen for dynamic applications. I haven't tried it yet.
Lloyd
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OK, here is my 2 cents. I've tried a lot of different lubes on o-rings and a lot of the stuff was suggested by some of you folks on here in months past. I think that in static applications (you put it together once and it stays there until you disassemble next time), o-rings are pretty forgiving and will work with just about anything.
But for dynamic applications, like piston seals, it is a lot trickier. But maybe it really isn't. I don't own one, but the Shoebox Compressor uses o-rings on its piston seals and the recommended lube is plain old white lithium grease ! Does the shoebox use polyurethane o-rings? I know a lot of folks swear by polyurethane o-rings even though they are a lot more expensive.
Any thoughts on the dynamic applications or the Shoebox?
Oh, and an engineer I know and trust says that Parker Super O-ring Lube (from an industrial supplier) is the best he has seen for dynamic applications. I haven't tried it yet.
Lloyd
Lloyd, good point/clarification. I would not use Crosman lube/motor oil in a dynamic condition. Only on C02 or HPA. In a dynamic condition like compressor rings or similarly in a spring piston you risk detonation. As lame as this sounds, I've had my shoebox compressor for about 7 months and have not opened it up. I know he recommends white lithium on the piston rods but I didn't know on the rings themselves. As soon as my tank runs down I'll have to hook it up. As you can tell I haven't been shooting my HPA guns that much and my tanks hold a lot of air!
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You've had a Shoebox for 7 months and have not used it ? :o
And so many dark-siders out there going to bed without enough air. Oh the shame of it ! :'(
I guess we'll just have to let that pass..
Yes, looking at the shoebox exploded view the piston rods are actually the pistons, and they slide through o-rings that hold the compression. A very slick design, especially considering how well it works (when taken out of the box and used, that is . ;) )
Lloyd
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Here's the text from the Parker Co. website, they have 2 types of lube. Note: The Parker company is THE premier seal and sealing device maker, hands-down.
"Parker O-ring Division provides two lubricants for easing installation of O-rings: Parker O-Lube is a petroleum-based grease recommended for use with polyacrylate, Vamac, neoprene, fluorosilicone, nitrile, HNBR, polyurethane, fluorocarbon, Aflas, Hifluor, and Parofluor o-ring materials. Parker Super-O-Lube is a silicone fluid recommended for use with all rubber materials. Only a thin film of Super-O-Lube should be used with silicone rubber to prevent seal damage. Both lubricants are available in packages ranging from 0.5 cc (the size of a ketchup packet) to a 40 pound (5 gallon) pail. Contact us for more information."
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SAADE,
Did you by any chance fond an easy source for the Parker Super O-Lube?
Thanks,
Lloyd
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Well, in springers for main piston seal the dielectric lube has been what I use for years and CDT for many years before me...:) One small tube lasted me my entire tuning careere. I still have half of it left..:)
As far as Shoebox Compressor goes they use two different seals. Poly for static and delrin for moving parts. My Shoebox has 40 plus hours on it and I lube shafts regularly with plain old white lithium. And that is what the manufacturer suggest to use.