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Coated Fabrics for Diaphragms

Many diaphragm applications require that the rolling diaphragms be coated with rubber on both sides, commonly referred to as "double-coat" diaphragms. This type of rolling diaphragm is typically required when the application sees pressure on both sides of the diaphragm in two ways:

First, by utilizing our proprietary double-coat molding process, we are able to provide double-coat diaphragms directly from rubber and fabric.

Second, by developing and maintaining an inventory of standard "coated-fabrics" that is, fabric that is coated on both sides by a sub-contractor using a variety of materials. The selection of the proper double-coat process and materials requires an understanding of both the rubber and fabric used in its fabrication, as well as the overall geometry of the rolling diaphragm. Dia•Com technical personnel are available to assist in the proper selection of coated fabric.

Coated Fabrics Chart


Dia•Com
Material
Designation

Fabric Style

Fabric
Gauge

(Inches)

Fabric
Gauge

(mm)

Maximum
Recommended Operating Temperature

Fabric
Tensile
Strength
(PSI)

Fabric
Tensile
Strength
(BAR)

General Physical Properties

FCDA-1015
FCGB-0806
FCGB-1325


Viton-Coated Polyester
Nitrile-Coated Nylon
Nitrile-Coated Nylon


.0090-.0120
.0075-.0085
.0110-.0150

.2286-.3048
.1905-.2159
.2794-.3810

302°F (150°C)
250°F (120°C)
250°F (120°C)

50
150
150

.0345
.1034
.1034

Medium duty, good chemical resistance
Medium duty, good formability
Medium duty, good formability


FCGB-1330
FCGB-5038
FCGB-8513


Nitrile-Coated Nylon
Nitrile-Coated Nylon
Nitrile-Coated Nylon


.0110-.0150
.0470-.0530
.0820-.0900


.2794-.3810
1.1938-1.3462
2.0828-2.2860

250°F (120°C)
250°F (120°C)
250°F (120°C)

150
350
350

.1034
.2413
.2413

Medium duty, good formability
High strength, good formability
High strength, limited formability


FCGD-0600
FCGE-1032
FCMB-1326


Nitrile-Coated Silk
Nitrile-Coated Cotton
Neoprene-Coated Nylon


.0050-.0065
.0080-.0120
.0010-.0150


.1270-.1651
.2032-.3048
.0254-.3810

212°F (100°C)
302°F (150°C)
250°F (120°C)

28
55
150

.0193
.0379
.1034

Ultra sensitive, fuel resistant
Medium duty, good formability
Medium duty, good formability

 

 

 

 

Dia•Com is a leading international provider of innovative, cost-effective molded diaphragm solutions critical to the operation of essential systems and equipment in industrial, automotive, aerospace, medical instrumentation, and food and water processing applications. The company's reputation for excellence is based on superior quality in the design, manufacture and application of its high-performance, state-of-the-art, fabric-reinforced and homogeneous elastomeric diaphragm seals.

fabric diaphragms | coated fabric diaphragms | elastomer diaphragms

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