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.
在线联系供应商
Other supplier products
 |
Single-Spring Elastomer Bellow Seals R24 for Burgmann 560 | Elastomer mechanical sealR24 Replacement for： Burgmann 560 Features: Single-Spring Inch size available Performance Capabilities of Elastome... |
 |
Flygt Mechanical Seals FKU-35 | Replacement for: FKU-35 upper parts for flygt 3126pump FKU-35 upper parts for flygt 2084, 2135, 2151, 2201 pump Features: Original Sweden desig... |
 |
Flygt Mechanical Seals FBU-28 | China Sealconsupplies a wide range of seal products for pump. Both standard and custom-designed sealing products are available. Top-quality mechani... |
 |
DIN Standard Double Cartridge Seals D21 with ANSI Bore Replacing Burgman Cartex DN | Double Cartridge Seals D21 Replacement for: BURGMAN CARTEX DN Features: DIN standard ANSI bore Performance Capabilities of cartex mechanica... |
 |
Stainless Steel Seal | Stainless Steel is short for stainless acid resistant steel. It is called Stainless Steel with weak corrosive medium or Stainless Steel, such as ai... |
Same products
 |
Quick-response Mechanical seal M74N-140 for power generation | 卖方: 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 | 卖方: 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 | 卖方: 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 | 卖方: Xingtai Honglei Seal Manufacturing Co., Ltd | Automotive oil sealsplay critical roles in different types of four wheeler vehicles. They are pri... |
 |
UN Oil Seal | 卖方: Xingtai Dingtong Rubber and Plastic Products Co., Ltd | A pliable, non-metallic PU ringis ingeniously nestled within a precision-machined groove or seaml... |
