1. Before installation, the sealing surfaces of the metal ring gasket and flange should be cleaned thoroughly, and any defects such as scratches and spots that may affect the sealing performance of the connection must be avoided.
2.The outer diameter of the metal ring gasket should be smaller than the outer diameter of the flange sealing surface, and the inner diameter of the sealing gasket should be slightly larger than the inner diameter of the pipeline. The difference between the two inner diameters is usually taken as twice the thickness of the sealing gasket, to ensure that after being compressed, the inner edge of the sealing gasket does not protrude into the container or pipeline, thus avoiding interference with the flow of fluid inside the container or pipeline.
3.The pre-tightening force of the gasket should not exceed the design specifications to avoid excessive compression of the sealing gasket, which may lead to loss of resilience.
4.When tightening the gasket, it is best to use a torque wrench. For large bolts and high-strength bolts, it is best to use a hydraulic tightener. The tightening torque should be obtained through calculation based on the given compression of the sealing gasket, and the oil pressure of the hydraulic tightener should also be determined through calculation.
5.When installing the metal ring gasket, the nuts should be tightened sequentially, but they should not be tightened all the way to the design value in one go. Generally, it is recommended to cycle through at least 2-3 times to ensure uniform stress distribution across the gasket.
6.For flammable and explosive pressure vessels and pipelines, tools should be used during replacement to avoid sparks generated by the collision of tools with flanges/bolts, which could lead to fire/explosion accidents.
7.In case of pipeline leakage, it is necessary to perform depressurization before replacing or adjusting the installation of sealing gaskets. Operation under pressure is strictly prohibited.
There are many types of RTJ gaskets, including R Gasket,RX Gasket,BX Gasket, SBX Gasket,IX Gasket,flange connections,and various customized products.We will do more sharing about ring joint gasket.
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