Carbon Seal

• 

Carbon shaft 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 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 different carbon ring seals according to different customers’ requirement.

+ stable - unstable 0 middle (between stable and unstable)

As a carbon seal ring manufacturer, we will offer more types of hydrocarbon pump mechanical sealfor customers, if you have needs, please contact us.

Другие товары поставщика

	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...
	Flygt Mechanical Seals FEU-22	Flygt Mechanical Seals FEU-22 Replacement for: FEU-22 upper parts for flygt 2070 pump FEU-22 upper parts for flygt 2102-40 pump FEU-22 upper pa...
	Double Cartridge Seals D13	China Sealconsupplies a wide range of seal products for pump. Both standard and custom-designed sealing products are available. Top-quality mechani...
	TC Seal	TC materials have features of high hardness, strength, abrasion resistance and corrosion resistance. It is known as “Industrial Tooth”....
	Coke Dry Quenching Rotary Seal Valve	Coke dry quenching is a kind of coke quenching method using inert gas to cool the red coke. During the dry quenching process, the red coke is loade...

Похожие товары

	Split Oil Seal	Продавец: Xingtai Hongyu Sealing Technologies Co., Ltd	Split type skeleton oil sealis a kind of industrial seal, which is simply used to seal the medium...
	oil seal kit	Продавец: Xingtai Nok-Cn Metal Seal Manufacturing Co., Ltd.	oil seal kit is a collection of various Oil Seals and related components designed for specif...
	High-Performance Valve Cover Gasket	Продавец: Xingtai Nok-Cn Metal Seal Manufacturing Co., Ltd.	High-Performance Valve Cover Gasket Product Description: High-Performance Valve Cover Gasket...
	freeze plug	Продавец: Xingtai Nok-Cn Metal Seal Manufacturing Co., Ltd.	freeze plug We not only will try our best to offer excellent services to every customer, but...
	Discover the Excellence of Bonded Seals	Продавец: Xingtai Nok-Cn Metal Seal Manufacturing Co., Ltd.	Discover the Excellence of Bonded Seals Discover the Excellence of Bonded Seals Enhance you...