Rubber Gasket is widely used in the joints of the pipes with the effect of sealing, preventing liquid or vapor from leaking out. Therefore, the gasket must have the size consistent with the grooves of two joints. This type of gasket requires the thickness and the diameter of the salient point to be very accurate. The material of the gasket depends on the liquid inside the pipe, it can be synthetic rubber, food grade rubber or food grade silicone.