Perfluoroelastomer (FFKM)：
These products are high cost and high performance rubbers that have the same chemical resistance as PTEE and mechanical properties that approach those of fluoroelastomers. The main property of this product is that it is barely affected by most liquid hydrocarbons, including aliphatic hydrocarbons, aromatic hydrocarbons, esters, ethers, ketones, oils, lubricants, and most hydrocarbon acids.
A number of halogenated compounds and strong oxidizing acids may cause material swelling. General continuous operating temperature is between 260-290oC. The material can also be intermittently used in temperatures of up to 316oC.
Excellent resistance against ozone, weathering, and fires. Good resistance against UV rays. Can be used as a high vacuum material.
※ We welcome orders of O-rings of various dimensions or other customized specifications.
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Perfluorinated (FFKM) O－RING
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Base material or commercialized product
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Chemical name
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Perfluoro-
elastomer
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ASTM D1418 Nomenclature
--→
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FFKM
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ASTM D2000 SAEJ200→
Type. class
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Physical properties
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Density (gm/cm3)
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2.01
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Hardness range (shore A)
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65-95A
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Breathability
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C
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Electrical resistance
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B
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Odor
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B
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Taste
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B
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Stain resistance
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C–B
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Stickiness
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C–B
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Mechanical properties
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Tensile strength (max psi)
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2﹐000
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Abrasion resistance
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B
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Flexural resistance
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A
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Tear resistance
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C–B
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Impact resistance
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B
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Deformability
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A
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Flexibility
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A
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Elastic resilience
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A
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Stress relief
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A
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Thermal properties
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Recommended maximum operating temperature (℃)
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290
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Low temperature ductility
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D
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Thermal aging resistance
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A
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Flame resistance
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A
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Resistance against the following elements
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Weathering
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A
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Oxygen
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A
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Ozone
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A
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EM radiation
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B
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Water
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A
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Steam
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B
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Bases (dil / conc)
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A/A
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Acids (dil / conc)
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A/A
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Oil, petroleum, kerosene
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A
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Benzene, liquid hydrocarbons
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A
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Animal and plant oils
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A
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Oxidizing solutions
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A
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Halogenated solvents
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A
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Alcohol
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A
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Synthetic lubricants
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A
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Hydraulic circulation:
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Silicate
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A
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Phosphate
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A
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※ A =Best / B = General / C = Poor / D= Not recommended
