Seal Sheet---Fluorine plastic Plate

Fluorine plastic Plate

This is a class of synthetic rubber designed for very high temperature operation. FKM provide extraordinary levels of resistance to chemicals, heat and oil, while providing useful service life above 200°C. FKM are not a single entity but a family of fluoropolymer rubbers. Fluoroelastomers or FKM can be classified by their fluorine content, 66%, 68%, & 70% respectively. This means that FKM rubber having higher fluorine content have increasing fluids resistance derived from increasing fluorine levels.

Properties of Fluoroelastomers (FKM)

They have excellent resistance to chemical attack by oxidation, by acids and by fuels.
They have good oil resistance.
They have limited resistance to steam, hot water, methanol, and other highly polar fluids.
The outstanding heat stability and excellent oil resistance are due to the high ratio of fluorine to hydrogen, the strength of the carbon-fluorine bond, and the absence of unsaturation.
The latest FKM polymers have a much broader fluids resistance profile than standard fluoroelastomers.
They are able to withstand strong bases and ketones as well as aromatic hydrocarbons, oils, acids, and steam.
Peroxide cured fluoroelastomers have inherently better water, steam, and acid resistance.

Application
FKM provides premium, long-term reliability even in harsh environments. A list of its applications is given below:

Aerospace

O-ring seals in fuels, lubricants
Valve stem seals
Fuel hoses
Fuel Injector O-rings
In tank and quick connect
Flue duct exp. Joints
Valve liners
Roll covers
Sheet stock/cut gaskets

Automotive

Shaft seals
Check valve balls
Diaphragms
Military flare binders
Electrical connectors
Tire valve stem seals
Clips for jet engines
Lathe cut gaskets

Industrial

Hydraulic o-ring seals and hydraulic systems
Manifold gaskets
Fuel tank bladders
Firewall seals
Engine lube siphon hose fuel system seals

Gaskets (valve & manifold)