The Highest Quality O-Rings Available When You Need Them
DESIOR TECHNOLOGY CO.,LTD has served as the leading rubber component manufacturer in China.
NBR O-RING
O-Ring Groove Design Extrusion Limits
Contact Us For Assistance Or SamplesClick Here and contact us today to receive a free quote or if you have any questions regarding sizing.
An o-ring is contained in a gland and forced to flow into the surface imperfections of the glands and any clearance gaps available to it.
An o-ring can perform sealing by means of squeeze under low pressure conditions. The extent of extrusion depends upon the hardness of O-ring, the pressure, and the size of the clearance gap.
O-Ring Size & Dimension Charts
There are two main o-ring sizing types: standard and metric. Standard was developed for use in the United States, while the international community uses -metric sizes. The metric sizes are further broken down by region, notably Europe and Japan.
Learn more about O-Ring sizes using the links below to explore their dimensions in an interactive chart.
• Standard AS-568B
• Japanese Metric O-Rings (JIS)
• European Metric O-Rings (DIN)
Seal & Design has all these sizes and more. We can provide virtually any required size.
We Supply This Standard Oring
| ● AS 568A USA | ● BS 4518 England | ● DIN 3771 Germany | ● SMS 1586 Sweden |
| ● AFNOR 47501 France | ● JIS B2401 Japan | ● JASO F404 Japan | ● ISO 3601 International |
Service Guarantee
• Perfect logistics system and SAP system to provide customers with accurate service guarantee;
• Guaranteed shortest delivery time based on stock.
Benefits Of Nbr (or Nitrile) O-rings
• NBR (or Nitrile) material is great for all but the most extreme applications.
• It works from -40-degrees F to 250-degrees F, and has good wear resistance.
• It works with oils but does not work with brake fluid, ketones, and some hydraulic fluids.
Not Recommend for
It is not resistant to weathering, sunlight, and ozone unless a special compound is used.
Names: NBR/Nitrile
Chemical Resistance
Aliphatic hydrocarbons (propane, butane, petroleum oil, mineral oil and grease, diesel fuel, fuel oils) vegetable and mineral oils and greases
HFA, HFB, and HFC fluids
Dilute acids, alkali and salt solutions at low temps.
Water (special compounds up to 212°F (100℃)
Not Compatible
Fuels of high aromatic content (for flex fuels a special compound must be used)
Aromatic hydrocarbons (benzene)
Chlorinated hydrocarbons (trichloroethylene)
Polar solvents (ketones, esters, ethers, acetones)
Strong acids
Glycol based brake fluids
Ozone, weather, and atmospheric aging
Disclaimer: These are general guidelines only. All materials should be tested in your application.
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