SourceSync carries a deep and broad inventory of Viton® o-rings. See below for our standard AS568 Viton o-rings, visit our Metric o-rings page for metric Viton o-ring sizes, or contact us if you need a special type or size of Viton o-ring you can't find here.
FKM compounds are widely used in chemical, automotive, aerospace and industrial applications. These compounds offer excellent chemical and temperature resistance. There are many additional specialty compounds based on A, B, F, GLT, GFLT, LTFE and ETP polymer types. O-Rings perform their sealing action by deforming to take the shape of their cavity, after being oversized to guarantee a predetermined interference fit.The seal is designed to have a point contact between the O-Ring and sealing faces. This allows a high local stress, able to contain high pressure, without exceeding the yield stress of the O-Ring body. The flexible nature of O-Ring materials accommodates imperfections in the mounting parts. They can withstand fluid pressures upto 100 bar (1500lbs/in2) provided such seals are properly designed and applied. The pressure ratings of the dynamic O-Ring seal can be enhanced by using suitable back-up rings. The back-up rings may be of acetal resin, PTFE or Fabric reinforced rubber.
At SourceSync, all of our Standard AS568 Viton o-rings are made from Genuine DuPont™ Viton®...not a generic FKM. Learn more about the Genuine DuPont™ Viton® advantage.
Viton® is a trade name for the DuPont brand of fluorocarbon, aslo known as FKM. FKM is a well-known high-performance rubber that has excellent resistance to high temperature, ozone, weather, oxygen, mineral oil, fuels, hydraulic fluids, aromatics and many organic solvents and chemicals.
Viton® variations include: Viton® A, Viton® B, Viton® F, Viton® GLT, Viton® GFLT, Viton® Extreme (a.k.a. Viton® ETP)
Viton® general type (A: 66% fluorine), middle fluorine content type (B, GBL: 67 to 68.5% fluorine), high fluorine content type (F, GF: 70% fluorine), improving low temperature flexibility type (GLT, GFLT) and excellent resistance to more chemicals and solvents (Viton® ETP Extreme). We also can supply excellent acid and alkali resistance parts made by Viton® TBR.
For more detailed information on specific types of Viton®, please download the Viton® Selection Guide.
Standard FKM compounds are Bisphenol-cured. FKM compounds with peroxide-cured possess better acid solution resistance than the bisphenol-cured and can replace litharge-cured applied in acid solutions. In some lubricants, adding a few organic amide or amine, or choosing peroxide-cured system Viton® will be better than bisphenol curing systems.
Standard Low Temp: -26°C (-15°F)
Standard High Temp: 232°C (450°F)
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