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 CARTRIDGE SEALS | Our single cartridge type sealis manufactured by balanced seal-face technology, helping to reduce energy comsumption whilst increasing reliability.... | |
PTFE WEDGE MECHANICAL SEALS | China-Sealcon is committed to providing the best service and products in fluid industry. And Sealcon's PTFE Wedge Mechanical Seals can replace the ... | |
Mechanical Seal On The Use Of Rotating Equipment | Mechanical seal of the symptoms and elements lRotating mechanical sealparts of the rotation equipment in the running side, sealed face often show ... | |
PTFE Seal | Polytetrafluoroethylene (PTFE), also known as teflon/teflon or plastic king, is a copolymer of tetrafluoroethylene monomer. First, it was developed... | |
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 ... |
Same products
Seal | 卖方: 台州嘉盛橡塑有限公司 | Natural disasters, political instability, or economic downturns can disrupt the supply of raw... | |
Silicon Carbide Pump Seals Silicon Carbide Bearings For Canned Motor Pump | 卖方: Zhejiang Guanyu Sealing Parts Co., Ltd. | Silicon carbide pump seals products Corrosion Resistance: The silicone material is highly resist... | |
DOUBLE CARTRIDGE MECHANICAL SEALS | 卖方: Hangzhou Sealcon Fluid Machinery Co., Ltd | The double cartridge mechanical sealis a pre-assembled package of seal components, which make the... | |
TC Seal | 卖方: Hangzhou Sealcon Fluid Machinery Co., Ltd | TC materials have features of high hardness, strength, abrasion resistance and corrosion resistan... | |
Stainless Steel Seal | 卖方: Hangzhou Sealcon Fluid Machinery Co., Ltd | Stainless Steel is short for stainless acid resistant steel. It is called Stainless Steel with we... |