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Old 02-07-2008, 11:55 PM   #1 (permalink)
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Orings?

What makes for a better oring, Buna/Nitrile or Polyurethane? Supposedly they both have a hardness rating of about 90. I've seen a few nitrile orings that are teflon coated, figure that's worth while?
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Old 02-07-2008, 11:57 PM   #2 (permalink)
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What are you using it for ? It depends on the application really. 90 durometers is fairly hard. Most of the time for paintball applications you want to be using 70 durometer o-rings unless it's on a high friction part.
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Old 02-08-2008, 12:28 AM   #3 (permalink)
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I want to use them for bolt orings mainly, but wouldn't mind using them on air tanks as well.
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Old 02-08-2008, 07:46 PM   #4 (permalink)
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Anyone else got any information about these materials that might help in selection of which to buy?
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Old 02-08-2008, 08:23 PM   #5 (permalink)
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For tank/bolt type o-rings you'll be fine with Nitrile. Polyurethane will most likely last longer though.
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