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Chemraz-653 — Ffkm

Elastomer
Ffkm
Grade Or Variant
Chemraz 653
Acid Resistance
Excellent
ASTM Designation
Ffkm (ASTM D1418)
Chemical Resistance Notes
Semiconductor Ffkm grade; Very Low Compression Set at High Temp
Common Name
Chemraz 653
Compression Set Pct (%)
14
Compression Set Temp C
204
Compression Set Time Hr
70
Density G CM3 (g/cm3)
1.99
Elongation at Break Pct (%)
135
Fluorine Content Pct (%)
>70
Fuel Resistance
Excellent
Gas Permeability
Very Low
Hardness Range Shore a
80
Max Continuous Temp C (C)
325
Max Service Temp C (C)
325
Min Service Temp C (C)
-15
Oil Resistance
Excellent
Ozone Resistance
Excellent
Tensile Strength Mpa (MPa)
12.6
FFKM — grade or variant Chemraz_653 · chemical resistance notes Semiconductor FFKM grade; very low compression set at high temp · common name Chemraz 653 · tensile strength mpa 12.6 MPa · elongation at break pct 135 % | Elastomer Service Properties | Engineering Database