Chemical-resistant fluoro elastomer
TOMBO™ No. 2670-FB
Rubber O-ring Fluoroelastomer FB
Fluoroelastomer FB is a ternary fluoroelastomer with improved chemical resistance due to Nichias’ proprietary compounding technologies. It has excellent resistance against high-temperature acids and steam for which a general-use fluoroelastomer cannot be used. There is very little metal elution and it has excellent purity. A high-performance fluoroelastomer that is excellent value for money.
Standard hardness (Duro A): 70
General-use fluoro elastomer can be used for quickly degrading, high-temperature inorganic acids, steam, and sodium hydroxide.
There is almost no elution of the metal from chemical solutions.
Eluted metal measurement results
As fluoroelastomer FB is not a compound that contains metal, it experiences a lot less metal ion elution than that of fluoroelastomer FA.
After cleaning with 5% hydrofluoric acid, it is cleaned with ultrapure water.
Test specimen: O-ring P16 (thickness Φ2.4 × inside diameter Φ15.8)
Chemical solution: 50% hydrofluoric acid 300 g
Temperature × time: 24°C × 72 hours (3 days)
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