High temperature properties of fluorine rubber ring excellent high temperature Viton elastomer can be said to be the best present. Viton long-term use at 220 ℃, 250 ℃ under short-term use; fluorine rubber elongation can be maintained at around 100%, hardness of 90 to 95 degrees. After maintaining its aging 350 ℃ hot air 16 hours of good elasticity, hot air aging at 400 ℃ for 110 minutes after good elasticity, hot air aging at 400 ℃ for 110 minutes after the spray containing carbon black, thermal black or carbon fibers rubber elongation increased by about 1 / 2-1 / 3, the intensity decreased about 1/2, still maintain good flexibility. Viton main performance. FKM has high chemical stability, high temperature resistance, aging resistance, is the best present of all elastomers a medium resistance. High temperature properties of fluorine rubber and silicone rubber, as can be said is the best elastomer (hereinafter referred to as fluoro rubber). Viton long-term use at 250 ℃. Viton seal oil seal species is the most expensive one, people tend to think the price of expensive is good, in fact, this understanding is a misunderstanding. First on the Fluorine rubber skeleton Seal describes the following purposes: to understand the purpose of this seal, you must know the main properties of fluorine rubber. FKM has high chemical stability, high temperature resistance, aging resistance, is the best present of all elastomers a medium resistance. High temperature properties of fluorine rubber and silicone rubber, as can be said is the best elastomer (hereinafter referred to as fluoro rubber). Viton long-term use at 250 ℃, 300 ℃ under short-term use; fluorine plastic heat better than 26-41. After 300 ℃ × 100 小时 air after thermal aging properties of 26-41 and 300 ℃ × 100-hour hot air aging 246's performance considerably, its elongation can be maintained at around 100%, hardness of 90 to 95 degrees . After 246 after aging at 350 ℃ hot air 16 hours to maintain good elasticity, hot air aging at 400 ℃ for 110 minutes after good elasticity, hot air aging at 400 ℃ for 110 minutes, spray containing carbon black, thermal black or carbon fiber The rubber material elongation increased by about 1/2 to 1/3, the intensity decreased about 1/2, still maintain good flexibility. 23-11 fluorine rubber can be long-term use at 200 ℃, short-term use at 250 ℃. Fluorine rubber has excellent resistance to weather aging, ozone resistance. According to reports, DuPont developed VitonA years after natural storage performance remains satisfactory, 0.01% of the air after 45 days there is no obvious effect of cracking in the ozone concentration. 23 fluorine rubber weather aging, ozone resistance is also excellent. Fluorine rubber has excellent vacuum performance, vulcanized rubber vacuum outgassing rate was 37 × 10-6 Torr l / s. Cm 2, has been successfully applied in a vacuum of 10-9 Torr. FKM has excellent mechanical properties. 26 fluorine rubber General Combining strong between 10 ~ 20MPa, elongation at break between 150 to 350%, tear strength between 3 ~ 4KN / m. 23 fluorine rubber strength between 15.0 ~ 25MPa, elongation of 200% to 600%, tear strength between 2 ~ 7MPa. In general, the fluorine rubber compression in large permanent deformation at high temperatures, but if the conditions are the same, such as compression from the same time 150 ℃ under permanent deformation, the small and neoprene than 26 fluorine rubber should be large, 26 fluorine rubber compression 200 ℃ × 24 hours of deformation equivalent butadiene rubber in 150 ℃ × 24 hours compression. Electrical properties are better fluorine rubber, low moisture absorption than other elastomers, may be used as an electrical insulating material preferably can be used under a low pressure at low frequencies. Viton on the solubility of gases is relatively large, but the diffusion rate is relatively small, so the overall performance out of permeability is also small. Fluoro rubber at 30 ℃ for oxygen, nitrogen, helium, carbon dioxide gas permeability and butyl rubber, butyl rubber rather, than neoprene, natural rubber is better. Good low temperature properties of fluorine rubber, which is due to its chemical structure caused e.g. 23-11 type of Tg> 0 ℃. Fluorine rubber low temperature performance is usually cold brittleness temperature and compression factor actually used to represent. Recipes and shapes (such as thickness) of plastic material products for brittleness temperature was relatively large, such as the formula to increase the amount of filler is brittle temperature sensitive deteriorates, increasing the thickness of the article, also sensitive to the degree of brittleness confused deteriorates. Radiation-resistant properties of fluorine rubber elastomer is a relatively poor, rubber 26 after radiation crosslinking effect performance, fluorine rubber 23 is shown as cracking effect. 246 Viton normal radiation drastic changes in performance at 5 × 107 Lun dose at 1 × 107 Lun condition hardness increase of 1 to 3 degrees in the air, the intensity decreased by 20%, and the elongation decreased by 30% to 50% , it is generally believed that fluorine rubber can withstand 246 1 × 107 Lun, the limit is 5 × 107 仑昆 Shan-hui Yang Sealing Products Co., Ltd. Address: Kunshan City, Jiangsu, China Zhenchuan Road Zip:.. 215300 QQ Contact: 937 002 008 Phone: 86 0512-50131470 Fax: 0512-82092220 86 Contact: Liu Yang Mobile: 15312165301 Company Website: http: //www.fymfzp.com E-MAIL: fymfzp@163.com