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What Is The Role Of The V-ring Of The Mechanical Seal?
Jul 04, 2018

What is the role of the V-ring of the mechanical seal?


What is the role of the V-ring of the mechanical seal? What if the mechanical seal does not have a V-ring? V-rings for mechanical seals:

 The V-ring of the mechanical seal is typically made of Teflon. Due to the poor elasticity of the Teflon material, it is structurally deformed so that its lip fits against the shaft or sleeve to achieve sealing.The angle of the inner cone space of the V-ring is 60°/60° to the angle of the rear chamfer cone. For the best.

The paired V-ring is composed of two V-shaped rings and one support ring, and the 45-paired V-shaped ring is composed of a V-shaped ring, a support ring and a support ring.

When designing a V-ring, the size must also match the size of the seal.A V-shaped auxiliary seal of a stationary ring is usually used by pairing a V-ring and a retaining ring. When the V-ring is actuated by the ring, the two ring-shaped rings are overlapped and the end of the push ring is processed into the same shape and size as the ring to replace the function of the ring.

Rubber O-rings and Teflon V-rings are preferred as auxiliary sealing elements in most applications, but bellows can be used in some special process conditions. The PTFE bellows for low pressure and strong corrosion can prevent the medium from leaking along the shaft (or bushing), and can also act as a moving ring auxiliary seal. It can also separate the spring from the sealed medium. Open to prevent the spring from being corroded by the sealing medium. Due to the application of the metal bellows mechanical seal, the rubber or plastic sealing ring is omitted, which can be used for high temperature and low temperature conditions. The rubber bellows is used as the auxiliary sealing and elastic element, which makes the mechanical seal structure simple and compact, convenient to install and cheap, and suitable for low-parameter conditions with a working pressure of not more than 1.5 MPa and a temperature not higher than 100 °C.


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Susie Ding

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