Carbon Seal
Mechanical carbon sealhas a long history. 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 sealwith the effect of sealing components. These carbon shaft sealare 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.
Selection of Carbon Seal Material
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 the sealing material.
If you are looking for a reliable carbon seal ring manufacturer, don't hesitate to contact us!
As a professional mechanical seal manufacturer, Sealconhas high-quality sealcon chinafor sale. Welcome to contact us if needed.
Отправить запрос, связаться с поставщиком
Другие товары поставщика
 |
DIN Standard Double Cartridge Seals D51 with Easy Installation Replacing Depac 321 | Double Cartridge Seals D51 Replacement for: Depac 321 Features: DIN standard Easy installation Performance Capabilities of Double Cartridge... |
 |
METAL BELLOW MECHANICAL SEALS | Metal Bellow seals are ideal for high temperature applications and harsh chemical services where elastomers cannot be used effectively. This seal t... |
 |
Seal Spare Parts Sealing Rings | Brief Introduction of Sealing Rings The seal ring is a ring seal with the notch, it is placed in the ring groove of the sleeve, the sleeve rotates ... |
 |
SiC Mechanical Seal | Silicon carbide products are classified into many kinds according to different application environment. It is generally used more mechanically. For... |
 |
METAL BELLOW MECHANICAL SEALS | Metal Bellow seals are ideal for high temperature applications and harsh chemical services where elastomers cannot be used effectively. This seal t... |
Похожие товары
 |
Quick-response Mechanical seal M74N-140 for power generation | Продавец: DONGFANG YOYIK (DEYANG) ENGNIEERING CO; LTD | "Quick-response Mechanical seal M74N-140 for power generation Is YOYIK for the use of turbine uni... |
 |
Oil Seal 118*160*13 for Truck Auto Part Shaft NBR KDIK oil seal factory | Продавец: Xingtai Honglei Seal Manufacturing Co., Ltd | Hot sale various high quality Truck oil seal from Chinaleading manufacturer. Our products are eff... |
 |
Bh1941g Engine Timing Cover Seal Engine Camshaft Oil Seal | Продавец: Xingtai Honglei Seal Manufacturing Co., Ltd | A Suzuki oil sealis a mechanical seal used to seal the gaps between the rotating shaft and the st... |
 |
Transmission Oil Seal Bh4371e Tb 35*50*9.5 OEM for Toyota | Продавец: Xingtai Honglei Seal Manufacturing Co., Ltd | Automotive oil sealsplay critical roles in different types of four wheeler vehicles. They are pri... |
 |
UN Oil Seal | Продавец: Xingtai Dingtong Rubber and Plastic Products Co., Ltd | A pliable, non-metallic PU ringis ingeniously nestled within a precision-machined groove or seaml... |
