Seal Spare Parts Spring

Introduction of Seal Spare Parts Spring

For a mechanical seal, the initial closing force ensures that the seal will function properly from startup. In end- or rotating-face mechanical seal designs, the initial closing force is provided by a spring component, which can be a single coil spring, multiple coil springs, a deflected bellows unit (elastomer or metal), or formed or flat springs. Initial biasing forces also can be created by magnets, compressed elastomers or any other means of applying a closing force between sealing elements.

For single spring seal, the seal body is sprung by either a metal or rubber bellows, a series of small seal springs, or by a single coil spring. These seals must be fitted with the correct coil spring for the rotation of the shaft. The major cause of failure of this type of seal is a broken drive spring. This is due to the use of 316 SS stainless steel as the coil material. The spring has to maintain the drive of the seal head and to flex with the seal head as it rotates. Any mis-alignment in the stationary face will cause the seal head to flex twice in every rotation. Stainless steel suffers from chloride stress corrosion therefore as the spring is under constant stress and probably exposed to chlorides, cracking will occur in the spring, leading to complete failure.

The same effect can occur when the seal is fitted with a series of small springs if they are constructed from SS316. A better material to use is Hastelloy C which does not suffer from chloride stress corrosion.

Function of Spring

The purpose of the springs is to hold the seal shut when the pump is stopped. In the case of the many less expensive seal the spring is also used to drive the rotating head of the seal.

When the pump is running the pressure in the seal chamber, being higher than the outside pressure, acts upon the seal surfaces to increase the closing force. Higher closing force means that any lubricating effect between the seal faces is marginalized leading to higher friction, more heat generation, and increased wear. Seal design can mitigate this increase in closing force. The design of a balanced seal incorporates surfaces to reduce the load imposed on the seal by the chamber pressure. By this means a manufacturer can reduce the pressure on the seal faces and produce the longer life of the seal.

Shapes	Directions
Coil	Left
Conical	Right
Wave
Bellow

Materials of the Spring Seal Ring

SS304

304 is austenitic (Ostrom field) stainless steel, is the most common and most widely used stainless steel for mechanical seals'spring.

Because it contains nickel, it is more resistant to corrosion and heat than steel alloys.

SS304 is commonly used in household appliances, building decoration, parts of vehicles, medical equipment, food industry, etc.

SS316

SS316 (American Steel Grade) is a molybdenum-containing stainless steel that has good resistance to chloride attack. Its corrosion resistance is superior to that of SS304 stainless steel and has good corrosion resistance and corrosion resistance to marine and aggressive industrial atmospheres. In the intermittent use of fewer than 1600 degrees and in 1700 degrees below the continuous use, SS316 stainless steel has good oxidation resistance. It has good weldability and can be welded using all standard welding methods. But SS316 stainless steel cannot be overheated for hardening.

SS316 stainless steel is mainly used in pulp and paper equipment heat exchangers, dyeing equipment, film processing equipment, pipelines, external timber for the coastal area.

Hastelloy C

Hastelloy is nickel-based corrosion-resistant alloy; mainly divided into nickel-molybdenum alloy and nickel-chromium-molybdenum alloy two broad categories.

Characteristics of Seal Spare Parts Spring

In the two states of oxidation and reduction of the atmosphere, it has excellent corrosion resistance to most corrosive media.

Excellent resistance to pitting, crevice corrosion and stress cracking corrosion.

Hastelloy C is suitable for heat exchangers, bellows compensators, chemical Equipment, flue gas desulfurization and denitration, paper industry, aerospace applications, acidic Environments.

We can also offer kinds of china agitatorfor sale, if you are interested, please contact us.

Hangzhou Sealcon Fluid Machinery CO., Ltd was established in 2011, with Sealcontrademark we specialized in mechanical seal design, manufacturing, maintenance and sales, as well as the pump valve spare parts procurement and sales.

Другие товары поставщика

	Rubber Seal	Rubber seal is one of the common base components in sealing device, and plays an important role in the leaking and sealing. It is composed of one o...
	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...
	PTFE Seal	Polytetrafluoroethylene (PTFE), also known as teflon/teflon or plastic king, is a copolymer of tetrafluoroethylene monomer. First, it was developed...
	Double Cartridge Seals D13	Replacement for: John crane SL Agitators Features: Pulp and paper plant Sulzer APP pumps Performance Capabilities of Double CartridgeSeals D...
	O.E.M MECHANICAL SEALS	With mechanical seal factory, Sealcon is able to design and manufacture a wide range of OEM mechanical seals. Our aim is to improve product quality...

Все товары поставщика

Похожие товары

	Seal	Продавец: Тайчжоу Jiasheng Rubber & Plastic Co., Ltd.	Natural disasters, political instability, or economic downturns can disrupt the supply of raw...
	Silicon Carbide Pump Seals Silicon Carbide Bearings For Canned Motor Pump	Продавец: Zhejiang Guanyu Sealing Parts Co., Ltd.	Silicon carbide pump seals products Corrosion Resistance: The silicone material is highly resist...
	DOUBLE CARTRIDGE MECHANICAL SEALS	Продавец: Hangzhou Sealcon Fluid Machinery Co., Ltd	The double cartridge mechanical sealis a pre-assembled package of seal components, which make the...
	TC Seal	Продавец: Hangzhou Sealcon Fluid Machinery Co., Ltd	TC materials have features of high hardness, strength, abrasion resistance and corrosion resistan...
	Stainless Steel Seal	Продавец: Hangzhou Sealcon Fluid Machinery Co., Ltd	Stainless Steel is short for stainless acid resistant steel. It is called Stainless Steel with we...