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.
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.... |
 |
Double Cartridge Seals D13 | Replacement for: John crane SL Agitators Features: Pulp and paper plant Sulzer APP pumps Performance Capabilities of Double CartridgeSeals D... |
 |
ELASTOMER RUBBER BELLOW MECHANICAL SEALS | Types of Elastomer Bellow Mechanical Seals Designed by single or double, Hangzhou SEALCON supply standard and OEM elastomer bellows sealto suit di... |
 |
PTFE TEFLON BELLOW MECHANICAL SEALS | Polytetrafluoroethylene (PTFE) is one of the best corrosion resistant materials in the world. Therefore, it is called "the king of plastic". So the... |
 |
Flygt Mechanical Seals FBU-28 | Replacement for: FBU-28 upper parts for flygt 3101pump Features: Original Sweden design Big stock Wilo pumps ITT pumps Flygt Pump Model of... |
Same products
 |
OSi PEMS 57 CAS 70914-12-4 | 卖方: OSi Holding Limited | Other descriptions: Siloxanes and Silicones, di-Me, 3-hydroxypropyl Me, ethers with polyethylene... |
 |
For iPhone 15-16 Pro Max Battery Adhesive Strips | 卖方: 深圳市维客修科技有限公司 | High-quality iPhone battery adhesive strips for iPhone 16/16 Plus/16 Pro/16 Pro Max/15/15 Plus/15... |
 |
resorcinol-formaldehyde-resin-dh20 | 卖方: Zhejiang Huaqi Information Technology Co., LTD | Adhesive Agent is a versatile and indispensable product in the manufacturing and construction ind... |
 |
skeleton oil seal | 卖方: 台州嘉盛橡塑有限公司 | the rubber O-ring has the following advantages: 1. Suitable for various sealing for... |
 |
Black Fused Alumina | 卖方: ZHENGZHOU HAOYUN NEW MATERIAL TECHNOLOGY CO., LTD. | Black Fused Aluminais a specialized type of fused alumina with a distinct black color. It is made... |
