the construction of a rubber join

A rubber joint, also known as a rubber expansion joint, is a flexible connector used to absorb movement, reduce noise and vibration in piping systems. It consists of a rubber body with various types of reinforcement such as cords, rings, or plates for added strength. The construction includes a rubber inner liner, usually made of EPDM, Nitrile or Neoprene rubber, which provides chemical resistance and flexibility.
The outer rubber cover protects the rubber liner and provides a barrier against environmental factors. It's designed to withstand pressure, temperature, and abrasion. Inside the joint, there are usually reinforced layers such as nylon or polyester that help to control the movement and pressure.
The ends of the rubber joint typically have flanges to facilitate installation and connection to the piping system. These flanges could be made of carbon steel, stainless steel or other materials depending on the application and the media flowing through the pipeline.
In addition, some rubber joints may feature control units for specific applications, such as control rods to limit movement or molded arches to optimize movement absorption.
Rubber joints are commonly used in various industries including HVAC, chemical processing, water treatment, and power generation due to their ability to absorb movement, reduce noise, and compensate for misalignment in piping systems.