Fluoro Elastomers (FKM/FPM)

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Abbreviation FKM
Common Name Fluoro Elastomers
ASTM D-2000 classification HK
Military(Mil-Std417) MIL=R-25897/MIL-R-83248
Chemical Definition Fluorinated Hydrocarbon

General Characteristics  
Durometer-Range (Shore A) 60-90
Tensile Range (P.S.I) 500-2000
Elongation (Max.%) 300
Compression Set Good
Resilience-Rebound Fair
Abrasion Resistance Good
Tear Resistance Good
Solvent Resistance Excellent
Oil Resistance Excellent
Low Temperature Usage (°F) +10° to -10°
High Temperature Usage (°F) 400° to 600°(depending on time and service condition)
Aging Weather-Sunlight Excellent
Adhesion To Metals Good

Feature

Advantage:

  1. Heat resistance up to 600°F
  2. Resistance to wide range of oils and solvents; specially all aliphatic, aromatic and halogenated hydrocarbons, acids, animal and vegetable oils.

Disadvantage:

  1. Nor recommended for ketones, low molecular weight esters and nitro cont