Carbon Seal
Carbon mechanical seal has 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 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.
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.
Specification of Carbon Ring Seal
Sealconcan produce differentcarbon shaft seals according to different customers’ requirement.
As a carbon seal ring manufacturer, we will do our best to meet all the needs of customers.
More kinds of hydrocarbon pump mechanical seal, please visit our website.
Send product request
Other supplier products
 |
SINGLE CARTRIDGE SEALS | Our single cartridge mechanical sealis manufactured by balanced seal-face technology, helping to reduce energy comsumption whilst increasing reliab... |
 |
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... |
 |
Seal Spare Parts Spring | Introduction ofSeal Springs For a mechanical seal, the initial closing force ensures that the seal will function properly from startup. In end- or ... |
 |
Flygt Mechanical Seals FEU-22 | China Sealconsupplies a wide range of seal products for pump. Both standard and custom-designed sealing products are available. Top-quality mechani... |
 |
MECHANICAL SEALS FOR PUMP | Mechanical seal for pump is a kind of dynamic seal assembly, which is widely used on the rotating shaft. It is also known as the end seal. Consisti... |
Same products
 |
Low Emission Graphite Packing Set: Industry-Leading Sealing for Critical Applications | Seller: Magpie Valve Packing Gasket Co., Ltd | Our plant’s Low Emission Graphite Packing Set is precision-engineered to deliver unrivaled ... |
 |
PI High Temperature Resistant Adhesive Tape | Seller: Guangdong NB Technology Co,.Ltd | PI High Temperature Resistant Adhesive Tape Product Description This type of product is resista... |
 |
Blue Kingfisher Tile Adhesive is stable and firm and will not fall off easily | Seller: Zhongshan Blue Kingfisher New Environmental Protection Materials Co., Ltd | Core performance Name:Ceramic Tile Cement Main materials: cement, quartz sand, polymer modifier... |
 |
LLDPE Stretch Film manufacturer | Seller: Guangzhou Dewangtai Trading Co., LTD | LLDPE Stretch Film manufacturer LLDPE Stretch Film Dewangtai is a leading company specializing i... |
 |
Wetting Agent OT-75 | Seller: Guangzhou Dewangtai Trading Co., LTD | Wetting Agent OT-75 is an auxiliary wetting agent for waterborne pressure sensitive adhesive... |
