Stainless Steel Pipe Fittings

A substitute for the flange gasket: sealing ring By

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A substitute for the flange gasket: sealing ring By

Zhejiang Yaang Pipe Industry Co., Limited ( is specialized in the production of flange gasket, flange manufacturers, quality, service and thoughtful. The new sealing method in the plate flange is more important to ensure that the joint is not leaking. The reason for the reduction of the size of the compact flange, the latest development of Vector company by the new flange to overcome the shortcomings of the ANSI flange. Compact flange has many advantages: the specification of the flange space, weight loss. Because the sealing of the diameter is reduced, the sealing surface is reduced. Second, the sealing ring has replaced the flange gasket, to ensure the matching between the sealing surface. Thus, a very small pressure can be pressed close to the cover. The need to reduce the pressure, the final design of a small volume and light weight (than the traditional ANSI flange weight loss 70%80% new products.
The American National Institute of national standards for design of ANSI flange has provided a suitable sealing technology for the oil and gas industry, for decades. And fruitful. However, the demand for oil and gas industry has changed, and the defects of the ANSI flange are often revealed. The maintenance benefit interest principle, the environment and the best guarantee of health and safety is the 21st century operators and contractors are facing three major issues. Therefore, people began to consider new flange sealing method. ANSI flange sealing principle is extremely simple: the two sealing surface of the bolt flange gasket and seal each other.

But this also leads to the destruction of the seal. In order to keep the seal, we have to maintain a huge bolt force. To do this, the bolts must be done even more. And greater bolt must match the larger nut. This means that larger diameter bolts need to create conditions for the nut is tightened. As everyone knows, the greater the diameter of the bolt, the application of the flange will become bent, the only way is to increase the flange part of the wall thickness. The whole device will require a great deal of size and weight, which is a special issue in the offshore environment, because in this case, the weight is always the main problem that people need to pay attention. And, fundamentally speaking, the ANSI flange is an invalid seal, the need to load the 50% bolts for the extrusion of the gasket, while the load is used to maintain the pressure only 50%.

Where can we find the high quality flange gasket: sealing ring.You can visit this website: (Zhejiang Yaang Pipe Industry Co., Limited).

Source: Zhejiang Yaang Pipe Industry Co., Limited (

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Pipe Fittings

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