Fluoroelastomer Copolymer Gum (VdF - HFP)

Index:

1. Molecular formula
2. Properties
3. Applications
4. Storage and Transportation
5. Specifications
• Appendix 1. Detailed Brand Name and Viscosity Value
• Appendix 2. Fluid Resistance Comparation Table

1.Molecular formula:

-{(CH₂CF₂)_0.8--[CF(CF₃)CF₂]_0.2}_n-

2.Properties:

• Good heat resistance,solvent-resistance and excellent oil -resistance;
• Good physical and mechanical properties,good electrical insulation and anti-radiation properties;
• Working under 250^oC   for long period,working at 300^oC   for short period;
• Low-temperature resistance not  bad.Glass-transition temperature -17^oC. Brittle point -40^oC~-55^oC   ;
• Not good resistance to low M.W.ketones,esters,some ethers,anhydrous ammonia and active  amines.

3.Applications:

Wildly used in aviation,automobile,petroleum,and chemical industries,mainly for sealing purpose. Especially good in the field of  requiring heat-resistance and or oil-resistance.Usually be made into "O" sealing rings,"V"sealing rings,gasket,sealing bowl with metal bone.Suitable for both static and dynamic sealing of hydraulic and lubricating systems.

4.Storage: In shady cool and dry place.

Transportation notes: Avoiding heating,moistening and exposing to the sun in transportation.    Non-hazardous chemicals.

5.Typical properties (Appendix 1.  Grade classification by viscosity range -  Appendix 2.  Fluids Resistance Comparation )