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MATERIALS
& APPLICATIONS
Silicone, Fluorosilicone,
and Viton™, (Fluorocarbon) are just some of the compounds
we use. The Custom Rubber Molding of our compounds (formulations)
are custom made for your
application. Although we have many "standard" materials,
every part has a specific formulation. We have over 600 existing
formulas
to choose from. Should one of these not meet your needs, we will
gladly formulate a new compound for your application without a special "set-up
charge."
Liquid Injection Molding for
Medical & Food Grade Products.
Silicone Molding for Aerospace,
Automotive, Electronics and
Commercial Industry. |
SILICONE
(Methyl,
Methyl-Vinyl, Methyl-Phenyl, Methyl-Phenyl-Vinyl)
Temperature
Range:
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General
(-75
Degrees F / -65 Degrees F to 400 Degrees F)
(-59 Degrees C / -54 Degrees C to 204 Degrees C)
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Special
(Low
Temp: Down to -175 Degrees F / -115 Degrees C)
(High Temp: Up to 500 Degrees F / 260 Degrees C)
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Data:
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Durometer:
5-80 Shore A
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Specific Gravity: 1.10 - 1.50 (Typical)
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Advantages
•
Excellent Ozone, Sunlight and Oxidation Resistance
•
Outstanding Resistance to High Temperature
•
Excellent Low Temperature Flexability
•
Very Good Electrical Insulation
•
Superior Color Stability
•
Low Compression Set
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Limitations
Not
for Super Heated Steam (Over 250 Degrees F) •
Poor Abrasion, Tear, and Cut Growth Resistance •
Inferior Oil, Gasoline and Solvent Resistance •
Poor Resistance to Alkalis and Acids •
Generally Low Tensile Strength •
Not for Aromatic Mineral Oil •
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(Special
Hi-Tear Resistance Compounds Available)
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Fluorosilicone Molding used for
aircraft fuel systems and other
custom rubber molded products. |
Fluorosilicone
(Fluoroalkyl Polysiloxane)
Temperature
Range:
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General
(-100
Degrees F to 350 Degrees F)
(-73 Degrees C to 177 Degrees C)
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Special
N/A
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Data:
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Durometer:
40-80 Shore A
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Specific Gravity: 1.40 - 1.65 (Typical)
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Advantages
•
Excellent High & Low Temperature Resistance
•
Excellent Resistance to Fuels & Solvents
•
Excellent Ozone & Sunlight Resistance
•
Excellent Compression Set Resistance
•
Very Good Thermal Conductivity
• Superior
Color Stability |
Limitations
Poor
Resistance to Ketones & Phosphate Esters •
Fair Mechanical Resistance Properties •
High Thermal Expansion Coefficient
•
Permeable to Most Vapors & Gases
•
Fair Water & Steam Resistance
•
Fair Tensile Strength
•
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Viton
Rubber Seals, Gaskets and
other custom rubber products
used in extreme applications. |
Viton™
(Fluorocarbon, Fluorel, FMK, Fluorinated
Hydrocarbon)
Temperature
Range:
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General
(-15
Degrees F to 400 Degrees F)
(-26 Degrees C to 204 Degrees C)
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Special
(Low
Temp: Down to -40 Degrees F / -40 Degrees C)
(High Temp: Up to 500 Degrees F (260 C) w/Shorter Life Expectancy)
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Data:
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Durometer:
50-90 Shore A
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Specific
Gravity: 1.70 - 2.20 (Typical)
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Advantages
•
Very Good Resistance to Oxygen, Ozone & Sunlight
•
Outstanding Resistance to High Heat (Up to 400 F)
•
Excellent
Resistance to Hydraulic Fluids & Grease
•
Excellent Resistance to Oil, Gasoline, Silicone Oil
•
Very Good Impermeability to Gases & Vapors
•
Good Flame Resistance
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Limitations
Very
Little Resistance to Oxygenated Solvents •
Very Poor Resistance to Low Temperatures •
Fair to Good Water & Steam Resistance •
Poor Tear, and Cut Growth Resistance •
Fair Adhesion to Fabrics & Metals •
Fair Electrical Properties •
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Neoprene
molding used for
environmental application where
petroleum products are not
present and general sealing. |
Neoprene
(Chloroprene (CR) Polycholoprene)
Temperature
Range:
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General
(-40
Degrees F to 250 Degrees F)
(-40 Degrees C to 121 Degrees C)
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Special
(Low
Temp: Down to -65 Degrees F / -54 Degrees C)
(High Temp: Up to 300 Degrees F / 149 Degrees C)
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Data:
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Durometer:
40-95 Shore A
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Specific
Gravity: 1.35 - 1.60 (Typical)
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Advantages
•
Good Resistance to Abrasion & Flex Cracking
•
Good Resistance to Refrigerants & Ammonia
•
Very
Good Resistance to Ozone & Sunlight
•
Good
Resistance to Alkalis & Acids
•
Moderate
Oil & Gasoline Resistance
•
Good
Inherent Flame Resistance |
Limitations
Very
Poor w/Polar Solvants (MEK, Acetone, Esters) •
Poor to Fair Resistance to Oxygenated Solvents •
Poor to Fair Resistance to Aromatic Solvents •
Limited Low Temperature •
Fair Electrical Resistivity •
Fair Dynamic Properties •
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Nitrile
molding used for
petroleum product exposure and
other molded rubber products. |
Nitrile
(Acrylonitrile Butadiene, NBR, Buna-N)
Temperature
Range:
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General
(-30
Degrees F to 250 Degrees F)
(-34 Degrees C to 121 Degrees C)
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Special
(Low
Temp: Down to -65 Degrees F / -54 Degrees C)
(High Temp: Up to 275 Degrees F / 135 Degrees C)
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Data:
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Durometer:
40-90 Shore A
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Specific
Gravity: 1.15 - 1.40 (Typical)
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Advantages
•
Superior Resistance to Petroleum-Based Hydraulic Fluids
•
Good
Resistance to Hydrocarbon Solvents
•
Excellent
Cold Water Resistant Properties
•
Good
Resistance to Dilute Alkalis & Acids
•
Wide
Range of Service Temperatures
•
Very
Good Oil & Gasoline Resistance
•
Good
Abrasion Properties |
Limitations
Not
Recommended for Chloronated Hydrocarbons
•
Not Recommended for Glycol Based Brake Fluids •
Not Recommended for Phospate Ester Fluids •
Poor Resistance to Oxygenated Solvents •
Inferior Resistance to Ozone & Sunlight •
Not Recommended for Strong Acids •
Poor Flame Resistance •
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Ethylene Propylene molding
used for water and
environmental seals where
petroleum products are absent. |
Ethylene
Propylene Rubber
(EPDM, EPR, EP, EPT)
Temperature
Range:
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General
(-70
Degrees F to 300 Degrees F)
(-57 Degrees C to 149 Degrees C)
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Special
(Up
To 350 Degrees F (177 C) For Steam Service)
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Data:
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Durometer:
45-90 Shore A
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Specific
Gravity: 1.10 - 1.30 (Typical)
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Advantages
•
Good Resistance to Phosphate Ester Based Hydraulic Fluids
•
Good
Resistance to Alkalis, Acids & Oxygenated Solvents
•
Excellent Resistance to Heat, Ozone & Sunlight
•
Good Resistance to Glycol Based Brake Fluids
•
Very
Good Low Temperature Flexibility
•
Superior
Resistance to Water & Steam
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Limitations
Not
Compatible w/Di-Ester Based Lubricants •
Low Hydrocarbon Solvent Resistance •
Poor Mineral Oil Resistance •
Poor Flame Resistance •
Poor Gas Resistance •
Poor Oil Resistance •
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Disclaimer
It is important
that you analyze ALL aspects of your application and review the information
provided concerning the product or system within the current website.
Due to the variety
of customer applications and operating conditions, the user, through
his or her own analysis and testing, is soley responsible for making
the final selection of the product and systems required and assuring
that all performance, safety, warning and regulatory requirements
of the application are met.
KDL Precision
Molding may assist you in the education of the materials and their
application but is not held liable for the selection of such materials
for your application.
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