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Specialty Elastomers for Diaphragms
DiaCom has developed a range of Specialty Elastomers that provide Elastomeric solutions to difficult applications & environments. These materials provide properties that are not found in other materials and can be used in the harshest of uses.
A Bio-Diesel Resistant ECO type compound usable to 195°F (90°C) with excellent sensitivity and long term Bio-Diesel resistance
A chemically resistant High Fluorine FKM designed for resistance against a variety of acids, alkalis & organic materials.
A FKM compound with long term low temperature & fuel resistance
A FEPM type with outstanding chemical resistance even at high temperatures. This material is only eclipsed in in its chemical inertness by FFKM.
A FFKM material that has been specially designed for easy manufacturing and adhesion to
Fabric reinforcement. No other polymer type has the chemical or heat resistance of this class of the polymer.
Physical Properties
Color
Black
White
Blue
Grey
Grey
Polymer Type
ECO
FKM
FKM
FEPM
FFKM
Compression Set Resistance
Fair
Good
Excellent
Good
Outstanding
Durometer (Shore A)
55
62
66
60
64
Tensile Strength (psi)
1,000+
1,600+
2,000
1,400+
1,000+
Elongation at Break (%)
400+
400+
400+
300+
150+
Resilience
Fair
Fair
Fair
Fair
Fair
Temperature Resistance Properties
Low Temperature Resistance (°C)
-40
-7
-24
-11
-2
High Temperature Rating (°C)
90
204
204
204
230
Environmental Resistance Properties
Ozone Resistance
Excellent
Excellent
Excellent
Excellent
Excellent
Radiation Resistance
Fair
Fair - Good
Fair - Good
Fair - Good
Fair - Good
Weather Resistance
Good
Excellent
Excellent
Excellent
Excellent
Chemical Resistance Properties
Acid (Dilute)
Good
Excellent
Excellent
Excellent
Outstanding
Aliphatic Hydrocarbons
Excellent
Excellent
Excellent
Excellent
Outstanding
Alkali (Dilute)
Excellent
Excellent
Excellent
Excellent
Outstanding
Potassium Hydroxide (30%)
Good
Poor
Poor
Excellent
Outstanding
Aromatic Hydrocarbons
Excellent
Excellent
Excellent
Excellent
Outstanding
Bio-Diesel
Excellent
Excellent
Good
Good
Outstanding
Gasoline
Good
Excellent
Excellent
Excellent
Outstanding
Hydraulic Fluids - Petroleum based
Excellent
Excellent
Excellent
Excellent
Outstanding
Hydraulic Fluids - Silicone Based
Excellent
Excellent
Excellent
Excellent
Outstanding
Hydraulic Fluids - Phosphate Ester
Poor
Poor
Poor
Poor
Outstanding
Ketones
Poor
Poor
Poor
Excellent
Outstanding
Amines
Poor
Poor
Poor
Excellent
Outstanding
Aldehydes
Poor
Poor
Poor
Excellent
Outstanding
Esters
Poor
Poor
Poor
Excellent
Outstanding
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