The wilden pump seal material

Wilden pump diaphragm pump and intermediates using extrusion seal, take a look at the pneumatic diaphragm pumps of the three most commonly used sealing materials performance.
nitrile butadiene rubber
Obtained by the emulsion polymerization method of butadiene and acrylonitrile, nitrile rubber used mainly to the production of low temperature emulsion polymerization method, excellent oil resistance, high abrasion resistance, good heat resistance, a strong adhesion.Its drawback is the poor low-temperature resistance, ozone resistance, poor electrical properties, elastic lower resistance.
Polytetrafluoroethene
The polytetrafluoroethylene Usually referred to as a "non-stick coating" or "easy to clean wok material; is a use of a fluorine- substituted all hydrogen atoms in the polyethylene, synthetic polymer materials.Such pneumatic diaphragm material with acid and alkali, and resistance to the characteristics of various organic solvents, and almost insoluble in all solvents.PTFE has the characteristics of high temperature, it's a very low coefficient of friction, and so can be used for lubricating effect while also easy to clean wok and plumbing the inner ideal paint.
FKM
Intramolecular fluorine-containing rubber, monomer structure by fluorine content of various types; the fluorine rubber earliest widely hexafluoride Department "VITON" trade name listed by DuPont. Temperature resistance superior to silicone rubber...... chemical resistance, resistant to most oils and solvents (ketones, esters, except), weather resistance, ozone resistance are good, but the cold is bad; generally widely used in automobiles and motorcycles, b goods, chemical plants sealpieces, using the temperature range -20 ℃ to 260 ℃, low temperature requires the use of resistant low when the choice applies to -40 ° C, as higher prices.

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