A.16.3. Viton
B910
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PRODUCT |
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Type |
Elastomer, rubber. |
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Chemical Composition |
Vinylidene Fluoride, Hexafluoropropylene Copolymer. |
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Manufacturer |
DuPont Dow Elastomers GmbH DuPont
Strasse 1 D-61352
Bad Homburg v.d.H. Germany |
Tel: +49 (0) 61 72 87 13 55 Fax: +49 (0) 61 72 87 13 51 Email: www.dupont-dow.com |
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EXPERIENCE & AVAILABILITY |
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Development Status |
Commercial Product |
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Cost Range |
Medium |
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Lot Reproducibility |
Excellent |
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Space Experience |
Extensive |
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GENERAL PROPERTIES (Physical,
Mechanical, Thermal, Electrical, Optical) |
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Nature |
Typical Value |
Remarks |
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Specific Gravity |
1.85 |
Manufacturer’s Data |
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Tensile Strength |
15 MPa |
Manufacturer’s Data |
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Hardness |
78 |
Manufacturer’s Data |
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Modulus (100%) |
6.5 MPa |
Manufacturer’s Data |
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Electrical Resistivity |
2 x 1011 W m |
Manufacturer’s Data |
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PROPERTIES RELEVANT TO SPACE USE |
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Nature |
Typical Value |
Type of Test |
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Temperature Range |
Cryogenic to 230°C |
Long term |
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-25°C to +230°C |
Long term dynamic |
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Outgassing |
TML = 0.5%, RML =0.3%, CVCM = 0.02% |
ECSS-Q-70-02 |
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Ionising Radiation |
10 Mrad |
Dynamic application |
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Oxygen Index |
50 |
ECSS-Q-70-21 |
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Offgassing/Toxicity |
Pass |
NASA NHB 8060-1A |
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Flammability |
Pass (24.5% O2) |
NASA NHB 8060-1B |
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SPECIAL RECOMMENDATIONS |
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·
There are many other grades of Viton with modified properties;
e.g. GLT for extra-low temperature
(-40°C), VTR-4590 for high fluid resistance. Also, gasket
manufacturers have their own designations. ·
All Viton formulations tested so far pass
ECSS-Q-70-02 and have an Oxygen Index similar to that cited above. |
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