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Fluoroelastomer (FKM) Orings
TOMBO™ No. 2670-FB Rubber O-ring Fluoroelastomer FB (FKM)
TOMBO™ No. 2670-FB
Rubber O-ring Fluoroelastomer FB
Fluoroelastomer FB is a ternary fluoroelastomer (FKM) 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.
Features
Heat resistance guide*: 200°C
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.
Applications
Cleaning equipment, wet etching equipment, filters, etc
Eluted metal measurement results
Inspected by Nichias
As fluoroelastomer FB is not a compound that contains metal, it experiences a lot less metal ion elution than that of fluoroelastomer FA.
Test conditions
Pre-cleaning
After cleaning with 5% hydrofluoric acid, it is cleaned with ultrapure water.
Elution
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)
Analysis method
ICP-MS
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