FKM Orings

Zhejiang Jiacheng New Material Co., Ltd. is one of the leading manufacturers and suppliers of fkm orings in China, also supports customized service. Welcome to wholesale bulk high quality fkm orings in stock here from our factory. If you have any enquiry about quotation and free sample, please feel free to email us.

Size: Standard and custom made

Material: Type A, Type B, Type F, FEPM, AFLAS, ETP, GLT, GFLT, peroxide cure FKM, FFKM, etc

Jiacheng New Material (SJK) is a factory who mainly focus on FKM seals. FKM orings is one of our typical products, and occupies more than 90% stock, including standard DIN 3771, SAE AS 568, JIS B2401.

ADVANTAGES

Good stability

Fluoroelastomer has high chemical stability, and is one of the best media resistant elastomers at present [1]. Type 26 fluororubber is resistant to petroleum based oils, diester oils, silicone ether oils, silicic acid oils, inorganic acids, most organic and inorganic solvents, medicines, etc., only low molecular ketones, ethers, esters, amine, ammonia, hydrofluoric acid, chlorosulfonic acid, phosphoric acid hydraulic oils. The medium performance of 23 type fluorine adhesive is similar to that of 26 type, and it has more unique features. Its resistance to strong oxidizing inorganic acids such as fuming nitric acid and concentrated sulfuric acid is better than that of 26 type fluorine adhesive. Its volume expansion is only 13%~15% after immersion in 98% HNO3 at room temperature for 27 days.

High temperature resistance

Fluoroelastomer has the same high temperature resistance as silicone rubber, which can be said to be the best elastomer at present. 26-41 fluororubber can be used for a long time at 250 ℃ and for a short time at 300 ℃; The heat resistance of 246 fluorine glue is better than 26-41. At 300 ℃ × Physical properties of 26-41 after 100h air thermal aging and 300 ℃ × After 100 hours of hot air aging, the properties of Type 246 are equivalent, and its elongation at break can be maintained at about 100%, and its hardness is 90~95 degrees. Type 246 maintains good elasticity after aging in hot air at 350 ℃ for 16 hours, and after aging in hot air at 400 ℃ for 110 minutes. After aging in hot air at 400 ℃ for 110 minutes, the elongation of the rubber containing spray carbon black, hot cracking carbon black or carbon fiber increases by about 1 / 2 ~ 1 / 3, and the strength decreases by about 1 / 2, which still maintains good elasticity. 23-11 type fluorine glue can be used for a long time at 200 ℃ and for a short time at 250 ℃.

Aging resistance

Fluoroelastomer has excellent weather aging resistance and ozone resistance. It is reported that the performance of Viton A developed by DuPont is still satisfactory after ten years of natural storage, and there is no obvious cracking after 45 days in the air with 0.01% ozone concentration. 23 type fluororubber has excellent weather aging resistance and ozone resistance.

Vacuum performance

Type 26 fluororubber has excellent vacuum performance. The vacuum outgassing rate of the vulcanizate of 246 fluororubber basic formula is only 37 × 10-6 ml/(sec * cm ^ 2). Type 246 fluororubber has been successfully applied under the vacuum condition of 10-9 Torr.

Mechanical properties

Fluoroelastomer has excellent physical and mechanical properties. The strength of type 26 fluororubber is generally 10~20MPa, the elongation at break is 150~350%, and the tear resistance is 3~4KN/m. The strength of 23 type fluororubber is 15.0~25MPa, the elongation is 200%~600%, and the tear resistance is 2~7MPa. Generally, the compression permanent deformation of fluororubber at high temperature is large. However, if compared under the same conditions, such as the compression permanent deformation at 150 ℃ for the same time, the compression permanent deformation of neoprene and neoprene rubber is larger than that of Type 26 fluororubber, and that of Type 26 fluororubber is 200 ℃ × The compression deformation under 24 hours is equivalent to that of polybutadiene rubber at 150 ℃ × 24 hours compression deformation.

Electrical performance

Type 23 fluororubber has better electrical properties and lower moisture absorption than other elastomers, so it can be used as a better electrical insulating material. Type 26 rubber can be used under low frequency and low pressure.

DISADVANTAGES

Low permeability

Fluorine rubber has a relatively large gas solubility, but its diffusion speed is relatively small, so its overall permeability is also small. It is reported that the permeability of type 26 fluororubber to oxygen, nitrogen, helium and carbon dioxide at 30 ℃ is equivalent to that of butyl rubber and polybutadiene rubber, and better than that of chloroprene rubber and natural rubber.

Low temperature performance

The low temperature performance of fluororubber is poor, which is due to its own chemical structure, such as the Tg of 23-11 type>0 ℃. The low temperature properties of actual fluororubber are usually expressed by brittle temperature and compression cold resistance coefficient. The formula of the rubber compound and the shape of the product (such as thickness) have a great influence on the brittleness temperature. If the amount of filler in the formula increases, the brittleness temperature will be sensitive to deterioration, and if the thickness of the product increases, the brittleness mixing degree will also be sensitive to deterioration.

Radiation resistance

The radiation resistance of fluororubber is one of the worse elastomers. Type 26 rubber shows cross-linking effect after radiation, and type 23 fluororubber shows cracking effect. The radiation of 246 fluororubber in air at room temperature is 5 × The performance changes dramatically at a dose of 107R at 1 × The hardness increases by 1~3 degrees, the strength decreases by less than 20%, and the elongation decreases by 30%~50% under the condition of 107 ℃. Therefore, it is generally believed that 246 fluororubber can resist 1 × 107R, limit is 5 × 107R.

Why Choose SJK:

Zhejiang Jiacheng New Material Co., Ltd. As a leading enterprise in domestic fluorine material sealing industry, SJK always keeps in mind the enterprise mission of “Striving for maximum interests of enterprises and customers”. At present, SJK has won the trust and recognition of many well-know customers at home and abroad, and its sales network has covered Europe, America, the Middle East, Southeast Asia, and other places. With the vision of “becoming a world famous seal brand”, SJK keeps forging ahead, has the courage to shoulder social responsibility, and abides by the core values of “honesty, pragmatism, innovation, and win-win”. Strive to build the first brand of high-end seals.

About Us

Zhejiang Jiacheng New Material Co., Ltd. (SJK for short) was founded in 1994, focusing on the R & D, production, and sales of special rubber seals, and mastering high-end sealing professional production technology. The company mainly produces O-ring, ED ring, rubber gasket, rubber strip, and other sealing products.

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