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Rubber expansion joints have a variety of uses

Rubber expansion joints have a variety of uses. They are typically used for sealing gaps and preventing leakage in pipes. The construction and materials available are designed for a wide range of pressure and temperature operating conditions. They also resist abrasion and erosion. A standard rubber expansion joint comes with a PTFE, TFE, or FEP liner fabricated to the joint body’s dimensions. These liners are extremely corrosive-resistant and exhibit very low coefficients of friction.

Typical applications

When the pressure is applied to a pipe, a rubber expansion joint absorbs the force and maintains a constant length. Typically, this type of joint comes in a spherical shape. There are double and single-sphere configurations, and they can be built with multiple arches. Unlike conventional expansion joints, spherical expansion joints do not need solid anchors. They also reduce the effects of pressure thrust forces.

Material selection

There are many factors that go into the selection of materials for a rubber expansion joint, but the two most critical properties are abrasion resistance and temperature resistance. Typically, natural rubber is the best choice for abrasion resistance, but other elastomers have different performance characteristics. In order to maximize the service life of your expansion joint, make sure to conduct abrasion resistance testing before purchasing it.


A rubber expansion joint is a piping connection that is capable of absorbing temperature changes and pressure. It is also capable of accommodating movement. To ensure a leak-free joint, manufacturers must provide certification of conformity that includes materials, pressure and temperature ratings, spring-rates, piping analysis, and 2-D and 3-D solid models. The certification must be stamped by a licensed engineer employed by the manufacturer.


Sealants for rubber expansion joints can be made from a variety of materials. Some of these materials can be precompressed, while others can be factory-applied. For instance, there are a number of preformed, closed cell urethane foam seals on the market. These materials are used to seal the expansion joints, and will minimize noise and stress on the system. Moreover, they can compensate for misalignment.


A rubber expansion joint is a pipe fitting used to seal gaps in pipe systems. It has an overall length of 90 or 130 mm and a sealing surface made of rubber, eliminating the need for gaskets. There are many types of rubber expansion joints, including silicone rubber, EPDM, and natural gum rubber. All have different properties and can be used for various applications.


When it comes to periodic movement, vibration, and temperature changes, a rubber expansion joint is a practical solution. These joints are available in a variety of sizes, materials, and specifications.


A rubber expansion joint is a component of a pollution control system. Its purpose is to minimize the stress and axial imbalance of a system by reducing vibrations in all directions. It is made of a synthetic rubber that is reinforced with a nylon-based rubber thread. The operating pressure for a rubber expansion joint depends on the nominal diameter and the operating temperature range.