RPP Corporation
Rubber Molding Excellence For Over 45 Years
Molded Diaphragms - Materials and Construction

The Laminate

Formed and bonded under high heat and pressure, the diaphragm laminate is generally structured in one of the following two forms:

Single-Coat Construction

For use in single-acting cylinders (pressure applied in only one direction).  A single layer of elastomer is bonded to one side of the base fabric.  This construction is generally employed in long-stroke diaphragms.

Double-Coat Construction

Used in double-acting cylinders (pressure applied alternately in each direction) or where extra durability is required and the stroke/diameter ratio is not excessively large. Elastomer is bonded to both sides of the fabric.


The Elastomer
The Fabric
The Laminate
The Elastomer The Fabric


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