Fluorocarbon O-rings » FKM O-Rings and Viton o-rings

Fluorocarbon o-rings offer superior heat resistance and resistance to a wide range of fuels and chemicals. Columbia offers a complete selection of fluorocarbon o-rings in both AS568 and metric sizes. Columbia also offers Fluorocarbon o-rings made using Viton® polymers. Viton fluoroelastomer is one of the most common fluoroelastomers due to its excellent heat resistance (400˚F / 200˚C) and ability to with stand aggressive fuels and chemicals.

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Fluorocarbon O-rings » Chemical Compatibility Overview

Viton®
Chemical Resistance
Very
Good
Good
Fair
Poor
Aliphatic Hydrocarbons
1      
Ammonia Gas, Amines, Alkalis       4
Aromatic Hydrocarbons 1      
Chlorinated Hydrocarbons   2    
Dilute Alkalis 1      
Gasoline 1      
Glycol Base Brake Fluids       4
Ketones     3  
Mineral & Vegetable Oils 1      
Mineral Oil ASTM No. 1 IRM 902 1      
Non-Flammable Hydraulic Fluid 1      
Silicone Oils & Grease 1      
Steam To 500ºF       4

Fluorocarbon Compound » Chemical Compatibility Lookup

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Viton ® is a registered trademarks of E. I. du Pont de Nemours and Company or affiliates. Fluorel ® is a registered trademark of Dyneon LLC
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*Due to the number of interacting forces, it is STRONGLY RECOMMENDED THAT YOUR ELASTOMER SELECTION BE RIGOROUSLY TESTED IN THE ACTUAL APPLICATION, performance assumptions must be checked so that you are certain that all variables have been carefully considered.

Fluorocarbon O-Rings » Physical Properties Overview

Viton
Physical Properties
Very
Good
Good
Fair
Poor
Abrasion Resistance   2    
Acid Resistance 1      
Chemical Resistance 1      
Cold Resistance       4
Compression Set Resistance 1      
Dynamic Properties   2    
Electrical Properties     3  
Elongation     3  
Flame Resistance 1      
Heat Resistance 1      
Impermeability   2    
Oil Resistance 1      
Ozone Resistance 1      
Tear Resistance     3  
Tensile Strength   2    
Water Steam Resistance     3  
Weather Resistance 1      
*The chemical compatibility and physical properties are listed as general characteristics of the viton® o-ring compound. Speciality compounds can be derived to enhance or modify the performance to meet o-ring's application needs.

Fluorocarbon Compound » Compound Attributes

Chemical Description Fluorocarbon Rubber
Abbreviations (ASTM 1418) FKM
ISO / DIN FKM
Other Trade Names Viton ®, Fluorel ®
ASTM D2000 Designations HK
Low Temperature Range 5°F / -15°C
High Temperature Range 390°F / 199°C
*The viton o-ring compound attributes are used to outline the basic properties. Fluorocarbon o-ring attributes can be adjusted by modifying the basic compound.

Custom Viton® O-Rings

O-ring Measurement Chart
Viton O-rings can be made in custom sizes to fit any application specific needs. Our engineering staff can review your application and design a solution that satisfies those requirements. You can find assistance with o-ring gland design here. You can find assistance with o-ring design here. To request a quote on your o-ring specifications please submit a RFQ here.

Standard AS568 Fluorocarbon O-Rings

All stocked fluorocarbon AS568 o-rings have three measurement types. First, a nominal inch reference, then actual inch sizes, and finally the metric size displayed in millimeters. Fluorocarbon o-rings are stocked and cataloged by their AS568 number. This number references the Aerospace Standard 568 (AS 568) which was published by the SAE (Society of Automotive Engineers). Each o-ring is assigned a dash number which correlates directly to an exact o-ring size. You may view a complete chart of these o-ring sizes here.

Standard Metric Fluorocarbon O-Rings

Fluorocarbon O-rings are available in several metric sizes. Fluorocarbon metric O-rings are cataloged by their cross section and inside diameter. Columbia references the metric fluorocarbon o-rings by the compound number and the cross section along with the inside diameter. You may view a complete chart of the metric o-ring sizes here.
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