Carbon Seal

• 

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.

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 thesealing material.

Sealcon can produce differentsaccording to different customers’ requirement.

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

Tag:Mechanical Seals

Другие товары поставщика

	Double Cartridge Seals D11	Replacement for: John Crane SE2 safematic Features： Pulp and paper plant Sulzer APP pumps Performance Capabilities safematic sealD11 Temper...
	Rubber Seal	China rubber ringseal is one of the common base components in sealing device, and plays an important role in the leaking and sealing. It is compose...
	Flygt Mechanical Seals FKL-35 Lower Parts for Flygt 3126/2084/2135/2151/2201 Pump	Flygt Mechanical Seals FKL-35 Replacement for: FKL-35 lower parts forflygt 3126pump FKL-35 lower parts for flygt 2084, 2135, 2151, 2201 pump Fe...
	Double Cartridge Seals D13	Replacement for: John crane SL Agitators Features: Pulp and paper plant Sulzer APP pumps Performance Capabilities of Double CartridgeSeals D...
	Flygt Mechanical Seals Plug in Plastic	Replacement for: Plug in seals with plastic housing Features: Original Sweden design cartridge design big stock wilo pumps ITT pumps Flyg...

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...