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Fluorosilicone Rubber (FVMQ)

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Abbreviation FVMQ
Common Name Fluorosilicone
ASTM D-2000 classification FK
Military(Mil-Std417) MIL-R-25988, Amend.2
Chemical Definition Flurosilicone

General Characteristics  
Durometer-Range (Shore A) 30-80
Tensile Range (P.S.I) 500-800
Elongation (Max.%) 300
Compression Set Good
Resilience-Rebound Excellent
Abrasion Resistance Poor
Tear Resistance Poor
Solvent Resistance Fair
Oil Resistance Good
Low Temperature Usage (°F) -80°
High Temperature Usage (°F) 300°
Aging Weather-Sunlight Excellent
Adhesion To Metals Poor

Feature

Advantage:

  1. More expensive than silicone, and for special applications where general resistance to oxidizing chemicals, aromatic and chlorinated solvent bases is required.

Disadvantage:

  1. Not recommended for and general attacked when exposed to brake fluids, hydrazine and ketones.
  2. Should not be confused with silicone in regard to high heat resistance.