Flurine® High Fluorine content H series Fluoroelastomer FKM
Flurine® High Fluorine content H series Fluoroelastomer FKM

Item specifics

High fluorine content. High fluidity
Shaft seals, oil seals, fuel hose. Extrusion moldi
White or light-yellow flake



Flurine® H series is a low and middle Mooney bisphenol-vulcanized fluoroelastomer with a fluorine content of 69%. 

It is a copolymer of vinylidene fluoride (VF2) and hexafluoropropylene (HFP). It is commonly used in automotive, hydraulic, electrical and chemical industries. 

It has excellent extrusion processability, excellent chemical resistance, low expansion rate, low fuel permeability, especially for fuel hoses.
Technical Specifications
FeaturesHigh fluorine content. High fluidity
UsesShaft seals, oil seals, fuel hose. Extrusion molding
FormsWhite or light-yellow flake
ItemsTypical ValueTest Method
Physical Properties
Fluorine Content(mass%)6969
Density(g/cc)1.85~1.901.85~1.90ASTM D297
Mooney Viscosity20~4950~99ASTM D1646 ML 1+10 at 121°C
Water content0.150.15ASTM D 5668
Vulcanization Properties
T10(s)<260<120ASTM D5289
T90(s)<420<360ASTM D5289
Mechanical Properties
Tensile strength(MPa)1111ASTM D412 Method A
100% Modulus4.24.4ASTM D412 Method A
Elongation at Break(%)160160ASTM D412 Method A
Tearing Strength(KN/m)1518ASTM D624
Hardness, Shore A7777ASTM D2240, Type A
Compression Set3535ASTM D395, Test B 70 hours at 200℃
Thermal Properties
TR10(℃)-17-17ASTM D1329
Brittleness Temperature(℃)-30-30ASTM D2137
Chemical resistance Properties
Resistance to liquidsMethanol, 23℃×70h
Tensile strength change rate(%)-10-8ASTM D412 Method A
Elongation at Break change rate(%)2018ASTM D412 Method A
100%Elongation change rate(%)-12-10ASTM D412 Method A
Hardness change, Shore A-4-3ASTM D2240, Type A
Volume change rate(%)3.53.3
FormulationCuring condition
Polymer 100 MT carbon black,N990 30PressOven
Calcium hydroxide 6 Magnesium oxide 310min at 177°C,0.5°24h at 230°C
Fluorocure-5# 2.5
Process Safety Instructions
1)Store and use all fluoroelastomers only in a well-ventilated area.
2)Do not smoke in areas contaminated with dust from fluoroelastomers.
3)Avoid eye contact. After handling fluoroelastomers wash any skin that came in contact with the product with soap and water.
4)Potential hazards, including evolution of toxic vapors, exist during compounding or processing under high temperatures. 
5)Before processing the fluoroelastomers, read and consult the MSDS, and follow all label directions and operation cautions..
Packaging And Storage
1)Fluoroelastomers be packed in PVC bags in the shape of rubber film, each bag weight 5KGS, and finally be put into a carton. Each carton contains 5 bags with net weight 25KGS.
2)It must be stored in a clean, cool, and dry place. The storage life is one year from the date of production. It must be re-inspected if over one year and only can use if qualified.
3)It is transported as non-dangerous chemicals. Avoid excessive vibration and far away from pollution, sunshine and water during the transport.