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Face Puncher
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x-rings (or quad rings) are much better than a standard o-ring due to the dual sealing surfaces and the resistance to rolling on itself..

the next better choice would be a u-cup..

but the best choice is a polypak, which is just a u-cup preloaded with an oring..

the o-ring keeps the sealing lip of the polypak pressed tight up against wall of the cylinder, whereas, to some extent, the u-cup relies on pressure to create a seal..

and you can see that the polypak has a sealing surface that is square to the applied force, and an oring has a beveled edge exposed. so the oring has a better chance of being "pushed" back inside of the piston and letting fluid pass by..

polypaks also have a higher pressure handling capability than an oring..



not bad for a bag guy, huh? ;)
 

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Discussion Starter #6
Originally posted by 216RIDER@Nov 15 2003, 11:41 PM
x-rings (or quad rings) are much better than a standard o-ring due to the dual sealing surfaces and the resistance to rolling on itself..

the next better choice would be a u-cup..

but the best choice is a polypak, which is just a u-cup preloaded with an oring..

the o-ring keeps the sealing lip of the polypak pressed tight up against wall of the cylinder, whereas, to some extent, the u-cup relies on pressure to create a seal..

and you can see that the polypak has a sealing surface that is square to the applied force, and an oring has a beveled edge exposed. so the oring has a better chance of being "pushed" back inside of the piston and letting fluid pass by..

polypaks also have a higher pressure handling capability than an oring..



not bad for a bag guy, huh? ;)
So were can I get them. :cheesy:
 

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Face Puncher
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anyplace that sells industrial hydraulics and seals..

they'll need to know the bore diameter, piston goove height and depth..
 

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Discussion Starter #9
Originally posted by Big Baller 82cutlass+Nov 15 2003, 11:50 PM--></span><table border='0' align='center' width='95%' cellpadding='3' cellspacing='1'><tr><td>QUOTE (Big Baller 82cutlass @ Nov 15 2003, 11:50 PM)</td></tr><tr><td id='QUOTE'><!--QuoteBegin--216RIDER@Nov 15 2003, 11:45 PM
anyplace that sells industrial hydraulics and seals..

they'll need to know the bore diameter, piston goove height and depth..
Any websites. :cheesy:[/b][/quote]
Hey dan can I get those o-rings at NAPA. :cheesy:
 

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Face Puncher
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Originally posted by Big Baller 82cutlass+Nov 16 2003, 12:05 AM--></span><table border='0' align='center' width='95%' cellpadding='3' cellspacing='1'><tr><td>QUOTE (Big Baller 82cutlass @ Nov 16 2003, 12:05 AM)</td></tr><tr><td id='QUOTE'>
Originally posted by -Big Baller [email protected] 15 2003, 11:50 PM
<!--QuoteBegin--216RIDER
@Nov 15 2003, 11:45 PM
anyplace that sells industrial hydraulics and seals..

they'll need to know the bore diameter, piston goove height and depth..

Any websites. :cheesy:
Hey dan can I get those o-rings at NAPA. :cheesy:[/b][/quote]
dunno
 
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