 Rubber Molding Excellence For Over 45 Years |
The Fabric
The fabric used in molded diaphragms employs a specially developed weave pattern with a unique property. In one direction, it stretches easily, allowing for the radial flexing of the diaphragm convolution. In the other (axial) direction, it provides high resistance to elongation and furnishes the tensile strength that enables the seal to withstand high differential pressures and transmit force to the piston head. A variety of diaphragm fabrics, woven specially for RPP, are available. RPP has developed over 20 unique varieties of fabric designed to meet specific operating conditions. Special, low cost knit versions are also available for high volume and low hysteresis (for more sensitive applications).
| Fabric Type | Maximum Temperature |
Typical Usage |
|---|---|---|
| Polyester | 325F / 163C
|
Generally used for single-coated diaphragms |
| Polyamide | 275F / 135C |
Generally used for double-coated diaphragms |
| High-Temp Polyamide | 500F / 260C |
Used in high-temperature, single and double-coated applications |
| Liquid Crystal Polymer based fabrics |
500F / 260C |
High temperature, high tensile strength applications |
| The Elastomer |
The Fabric |
The Laminate |
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