- pneumatic ball valve Commonly used three kinds of pneumatic valve sealing material

VITON fluoroelastomer ( FKM
molecules containing fluorine rubber, depending on the fluorine content of the monomer structure with various types; Currently widely used hexafluoride series of fluorine rubber by dupont to the earliest 'VITON' brand name. Chemical resistance, resistance to most of the oil and solvent ( Except ketone, esters, weather resistance, ozone resistance are good, but bad cold tolerance; General is widely used in vehicle, b goods, such as chemical plant of seal, using temperature range - ℃ ~ ℃, low temperature requires the use of low temperature resistant type can choose to apply to - ℃, as the price is higher. NBR (nitrile butadiene rubber Nitrile butadiene rubber by and by the emulsion polymerization of acrylonitrile, butadiene nitrile rubber is mainly produced by emulsion polymerization at low temperature, excellent oil resistance, high wear resistance, good heat resistance, strong adhesive relay. The disadvantages of poor low temperature resistance, ozone resistance is poor, poor performance, flexible slightly lower.
YAZE( Pneumatic company's main products: pneumatic pneumatic valve pneumatic ball valve pneumatic butterfly valve Keywords:
pneumatic pneumatic valve pneumatic pneumatic valve in addition, it also has good water resistance, air tightness and excellent bonding performance. Is widely used in various oil resistant rubber products, a variety of oil resistant gaskets, gasket, casing, flexible packaging, soft hose, printing and dyeing, plastic roller, plastic cable materials, etc. , in automotive industry, aviation, petroleum, photocopying etc become indispensable in the elastic material. Nitrile rubber with good oil resistance, oil resistance after thiokol and fluorine rubber, and the abrasion resistance and air tightness. Drawback is not resistant to ozone and aromatic nitrile butadiene rubber, halogenated hydrocarbon, ketone and ester solvent, for insulation. Main use nitrile rubber is used mainly for oil products, such as tubing, adhesive tape, rubber diaphragm and large oil capsule, etc. , are often used to make all kinds of oil resistant moulded products, such as o-ring, oil seal, cup, diaphragm valve, corrugated pipe, etc. , are used to make plastic board and wear-resistant parts. EPDM EPDM ( 乙烯- 丙烯- Diene Monomer is epdm ethylene, propylene and non conjugated dienes terpolymer, in commercial production. The world consumption is ten thousand tons per year. EPDM's main feature is its superior resistance to oxidation and ozone resistance and erosion resistance ability. Because of the epdm belongs to the family of polyolefin, it has excellent curing characteristics. Of all the rubber, EPDM has the lowest proportion. It can absorb a large number of filler and oil and impact properties. So can make cheap rubber compounds. Molecular structure and characteristics of epdm is ethylene, propylene and the terpolymer of conjugated dienes. Dienes with special structure, only two, one of the keys to copolymerization, unsaturated double bond mainly as a cross-linking. Another owner chain unsaturated will not become polymerization, will only become a side chain. The main polymer chain epdm is completely saturated. This feature makes the epdm can resist heat and light, oxygen, especially ozone. Epdm is essentially infinite sex, the solution polarity and chemical resistance, bibulous rate is low, it has good insulating properties. Features: high and low density filling; , aging resistance; And corrosion resistance; And water resistance; And a hot water resistance; , electric performance; And elastic; And adhesion.