Mason / Mercer Expansion Joint and Flexible Hose

Mason Safeflex Overview

Safeflex expansion joints are molded and vulcanized in hydraulic presses. This high pressure process produces a smooth finished product with outstanding adhesion between the cover, reinforcement and tube....

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Safeflex Development

In 1976 we introduced our first spherical expansion joints, under the name "MASONFLEX". Although we had higher burst pressures than the other manufacturers, our technical literature still made people aware that Nylon reinforcement had to be de-rated at higher temperatures.

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Masonflex Neoprene Connectors

Masonflex Neoprene connectors are all designed with multiple plies of DuPont Kevlar® tire cord and Neoprene reinforcement. They are molded in hydraulic rubber presses where high pressure air bags expand inside the preforms to force the carcasses against the mold walls.

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Expansion Joint Installation Procedures

Expansion Installation Procedures, Storage and Inspection Criteria

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World Standard Flange Dimensions

These tables have been prepared in an effort to familiarize engineers with some of the world standards and American equivalents. In a few cases, dimensions will differ from these tables, particularly in sizes over 48". It is safest to work from certified prints before fabricating mating rubber or metal flanges. Thicknesses are omitted because of conflicting information in published tables.

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A Comparison of Spool & Sperical Expansion Joints

Forty or fifty years ago all spool type flanged rubber expansion joints were hand built and many are still being made that way today. Hand built quality depends on a technician working at a slow speed foot controlled lathe that turns a form of the proper inside diameter. The form has a centered rubber arch or multiple arches to form the arch cavities,and adjustable steel flanges that are set for the face-to-face dimension.

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A Comparison of Tire Cord & Other Elastomeric Materials

A Comparison Of Tire Cord and Elastomeric Materials Used in Spherical and Other Style Expansion Joints

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