Green FKM walform seals for hydraulic steel pipe extrusion sealing

WF-ring,Walform
The high quality Walform(WF ring) produced by Huayi is made of carefully selected fluorinated rubber with high performance. It can withstand High Pressure Pulse and good performance of Corrosion Resistance & nice High temperature Resistance.

Walform can withstand high pressure pulse, and has good corrosion resistance and high and low temperature resistance, which can ensure the safe and reliable use of the pipeline. Walform has sufficient stock and can be delivered quickly to meet your demands

FKM Descriptio

FKM is a synthetic polymer elastomer which contains fluorocarbon-based fluoroelastomer. Because of the fluorine atoms, FKM rubber offer an excellent heat resistance, antioxidant resistance, oil resistance, corrosion resistance and atmospheric aging resistance. It has been widely used in aerospace, aviation industry, automotive industry, oil gas and household appliances. FKM material plays a very important role in national defense industries.

Fluororubber properties:
Good Chemical Stability
FKM has a high degree of chemical stability, which is one of the best media resistant properties of all elastomers at present Type-26 FKMs can resistant to petroleum-based oils, diester oils, silicone ether oils, silicate oils, inorganic acids, most organic, inorganic solvents, pharmaceuticals, etc. In addition, it can resistant to low molecules of ketones, ethers, esters, amine, ammonia, hydrofluoric acid, chlorosulphate, phosphoric acid hydraulic oil. Type-23 FKMs are same with Type-26 FKMs in dielectric property, and it’s more unique, it has high resistance of strong oxidation inorganic acids like fuming nitric acid and concentrated sulfuric acid compared with Type-26 FKMs. When immersed in 98% HNO3 at room temperature for 27 days, the volume expansion is only 13% ~ 15%.

High Temperature Resistance

1.FKM has an excellent performance in high temperature resistance. It can be used in the temperature from 180 ℃ to 220 ℃ environment for a long time. If the temperature up to 250 ℃, it can be used in a short time, and its performance is superior in all aspects.

2.FKM has poor performance in low temperature, because of its chemical structure. The material formula and shape(thickness) play a important role in brittle temperature, if we increase the fillers in the formula, the brittle temperature will be destroyed sensitively, the thickness of the product increases, the brittle temperature also will be destroyed.

Q: Are you trading company or factory ?

A: We are a factory ,so we can offer you Factory Price with High Quality.

Q: How long is your delivery?

A: For stock items ,we can ship them immediately after receive payment .

For other items,we will need 20 days for mass production.