Rubber Expansion Joint

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Keyser Rubber Expansion Joints Product Description and Advantages Construction Details Basic Spool Type Expansion Joints Single Sphere Connectors Twin Sphere Connectors Elbow Connectors More Rubber Expansion Joint Products

Construction Details

Cover:
The exterior surface of the joint is formed from natural or synthetic rubber, depending on service requirements. Its primary function is to protect the carcass from external abuse or damage. A protective costing may be applied to the exterior of the joint for additional protection. Similarly, special polymers can be added to resist chemicals, oils, sunlight, acid fumes and ozone.

Tube:
A protective leak-proof lining made up of synthetic or natural rubber as the service dictates. This is a seamless tube that extends through the bore to the outside edges of the flanges. Its purpose is to eliminate the possibility of the materials being handled penetrating the carcass and weakening the fabric. These tubes can be designed to cover service conditions for chemical petroleum, sewage, gaseous and abrasive materials.

Metal Reinforcements:
Wire or solid steel rings are embedded in the carcass are used as strengthening members of the joint. At times, this raises the rated working pressure and can supply rigidity to the joint for vacuum service.

Fabric Reinforcements:
The carcass fabric reinforcement is the flexible and supporting member between the tube and cover. Standard constructions usually utilize high quality synthetic fabric. At times, natural fabrics are used at some pressures and temperatures. All fabric plies added with rubber or synthetic compounds to permit flexibility between the plies.