Viton
Fluoroelastomer rubber or FKM or VITON® is based on hexafluoropropylene vinylidene fluoride.
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FKM's are serviceable in continuous heat of up to 250º C and intermittent heat of up to 300º C.
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Satisfactory resistance to low temperatures of typically -20º C and - 40º C by use of special grades.
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FKM's exhibit good flame resistance and are usually self extinguishing upon removal of flame source.
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All FKM's have excellent resistance to oxygen, ozone and natural weathering..
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FKM compounds have outstandig resistance to compression, especially at elevated temperatures.
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Resistance to chemicals; amongst all synthetic rubbers FKM's are the most resistant to many of the solvents and chemicals, giving long service where other materials do not. Excellent resistance against hydrocarbons, aliphatics, aromatic and chlorinated chemicals. Good resistance to acids and alkali's including oxidants. They do have poor performance against ethers, ketones, and bases.
| Ref. |
Specific Gravity |
Hardness |
Tens. Stren. |
Elong. |
Compres. Set |
Working
Temp. |
| |
g/cm3 |
Shore A |
M Pa |
% |
C |
h |
% |
º C |
| V732 White |
2,08 |
65 |
10,7 |
200 |
200 |
22 |
23 |
-10/250 |
| V737 Black |
1,96 |
70 |
5 |
165 |
175 |
22 |
50 |
-30/250 |
| V733 Black |
1,99 |
72 |
4 |
165 |
175 |
22 |
55 |
-10/250 |
| V726 Black |
1,78 |
75 |
8 |
165 |
175 |
22 |
45 |
-30/250 |
| V736 Black |
2,10 |
80 |
4 |
150 |
175 |
22 |
55 |
-30/250 |
| V734 Green |
2,09 |
65 |
5,9 |
200 |
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- |
- |
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The current technical information has been carefully checked and given in good faith but it is not exempted from possible typing errors.
Historically, compounds have different commercial names in each market.
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