Carbon Seal
Graphite is an isoform of element carbon. In 1971, the United States studied the successful flexible graphite sealing material, which solved the leakage of atomic energy valve. After deep processing, the flexible graphite becomes an excellent sealing material, which are made into various carbon mechanical seals with the effect of sealing components. These carbon mechanical seals are used in chemical, petroleum, electric power industries such as high temperature fluid seal.
Because the flexible graphite is formed by the expansion of expanded graphite after high temperature, the amount of intercalating agent remaining in the flexible graphite is very small, but not completely, so the existence and composition of the intercalation agent have a great influence on the quality and performance of the product.
The original inventor used concentrated sulfuric acid as oxidant and intercalating agent. However, after being applied to the seal of a metal component, a small amount of sulfur remaining in the flexible graphite was found to corrode the contact metal after long term use. In view of this point, some domestic scholars have tried to improve it, such as Song Kemin who choosed acetic acid and organic acid instead of sulfuric acid. acid, slow in nitric acid, and lower the temperature to room temperature, made from a mixture of nitric acid and acetic acid. By using the mixture of nitric acid and acetic acid as the inserting agent, the sulfur free expanded graphite was prepared with potassium permanganate as oxidant, and acetic acid was slowly added to nitric acid. The temperature is reduced to room temperature, and the mixture of nitric acid and acetic acid is made. Then the natural flake graphite and potassium permanganate are added to this mixture. Under constant stirring, the temperature is 30 C. After reaction 40min, the water is washed to neutral and dried at 50~60 C, and the expanded graphite is made after high temperature expansion. This method achieves no vulcanization under the condition that the product can reach a certain volume of expansion, so as to achieve a relatively stable nature of thesealing material.
Sealcon can produce differentsaccording to different customers’ requirement.
+ stable - unstable 0 middle (between stable and unstable)
Tag:Mechanical Seals
在线联系供应商
Other supplier products
 |
SiC Mechanical Seal | Silicon carbide products are classified into many kinds according to different application environment. It is generally used more mechanically. For... |
 |
Types of PTFE Wedge Mechanical Seals | Hangzhou Sealcon Fluid Machinery Co., Ltd is a professional wedge gasket suppliersfor PTFE Wedge mechanical seals to suit all the major pump equipm... |
 |
Carbon Seal | Graphite is an isoform of element carbon. In 1971, the United States studied the successful flexible graphite sealing material, which solved the le... |
 |
O.E.M MECHANICAL SEALS | With mechanical seal factory, Sealconis able to design and manufacture a wide range of OEM mechanical seals. Our aim is to improve product quality ... |
 |
TC Seal | TC materials have features of high hardness, strength, abrasion resistance and corrosion resistance. It is known as “Industrial Tooth”.... |
Same products
 |
Top Selling Mechanical Seal | 卖方: Xingtai Subote Oil Seal Manufacturing Co., Ltd. | Top Selling Mechanical Seal TC5Y 140*160*14/17 Oil Seal Manufacturers Black Color Hydraulic ... |
 |
Oil Seal Solutions | 卖方: Xingtai Subote Oil Seal Manufacturing Co., Ltd. | Oil Seal Solutions As electric vehicles (EVs) continue to gain global market share, the role... |
 |
Oil Seals | 卖方: Xingtai Subote Oil Seal Manufacturing Co., Ltd. | Oil Seals Agricultural machinery operates in extremely harsh environments, making custom ess... |
 |
Oil Seals for Heavy Industry | 卖方: Xingtai Subote Oil Seal Manufacturing Co., Ltd. | Oil Seals for Heavy Industry In heavy industry sectors such as mining, construction, and pow... |
 |
PTFE Seals Manufacturer | 卖方: Xingtai Subote Oil Seal Manufacturing Co., Ltd. | PTFE Seals Manufacturer The global is entering a period of sustained expansion, with analyst... |
