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:
General
(-75 Degrees F / -65 Degrees F to 400 Degrees F)
(-59 Degrees C / -54 Degrees C to 204 Degrees C)
Special
(Low Temp: Down to -175 Degrees F / -115 Degrees C)
(High Temp: Up to 500 Degrees F / 260 Degrees C)
Data:
Durometer: 5-80 Shore A
Specific Gravity: 1.10 - 1.50 (Typical)

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

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
(Special Hi-Tear Resistance Compounds Available)

Fluorosilicone Molding used for
aircraft fuel systems and other
custom rubber molded products.

Fluorosilicone
(Fluoroalkyl Polysiloxane)

Temperature Range:
General
(-100 Degrees F to 350 Degrees F)
(-73 Degrees C to 177 Degrees C)
Special
N/A
Data:
Durometer: 40-80 Shore A
Specific Gravity: 1.40 - 1.65 (Typical)

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

Viton Rubber Seals, Gaskets and
other custom rubber products
used in extreme applications.

Viton™
(Fluorocarbon, Fluorel, FMK, Fluorinated Hydrocarbon)

Temperature Range:
General
(-15 Degrees F to 400 Degrees F)
(-26 Degrees C to 204 Degrees C)
Special
(Low Temp: Down to -40 Degrees F / -40 Degrees C)
(High Temp: Up to 500 Degrees F (260 C) w/Shorter Life Expectancy)
Data:
Durometer: 50-90 Shore A
Specific Gravity: 1.70 - 2.20 (Typical)

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

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

Neoprene molding used for
environmental application where
petroleum products are not
present and general sealing.

Neoprene
(Chloroprene (CR) Polycholoprene)

Temperature Range:
General
(-40 Degrees F to 250 Degrees F)
(-40 Degrees C to 121 Degrees C)
Special
(Low Temp: Down to -65 Degrees F / -54 Degrees C)
(High Temp: Up to 300 Degrees F / 149 Degrees C)
Data:
Durometer: 40-95 Shore A
Specific Gravity: 1.35 - 1.60 (Typical)

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 •

Nitrile molding used for
petroleum product exposure and
other molded rubber products.

Nitrile
(Acrylonitrile Butadiene, NBR, Buna-N)

Temperature Range:
General
(-30 Degrees F to 250 Degrees F)
(-34 Degrees C to 121 Degrees C)
Special
(Low Temp: Down to -65 Degrees F / -54 Degrees C)
(High Temp: Up to 275 Degrees F / 135 Degrees C)
Data:
Durometer: 40-90 Shore A
Specific Gravity: 1.15 - 1.40 (Typical)

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

Ethylene Propylene molding
used for water and
environmental seals where
petroleum products are absent.

Ethylene Propylene Rubber
(EPDM, EPR, EP, EPT)

Temperature Range:
General
(-70 Degrees F to 300 Degrees F)
(-57 Degrees C to 149 Degrees C)
Special
(Up To 350 Degrees F (177 C) For Steam Service)
Data:
Durometer: 45-90 Shore A
Specific Gravity: 1.10 - 1.30 (Typical)

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

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 •

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.


For Direct Contact
Engineering E-Mail: DavidW@kdlprecision.com
KDL Precision Molding Corp.
11381 Bradley Avenue Pacoima, CA 91331
Phone: 800-890-9899 • Fax: 818-896-8276

Sales E-Mail:
BenB@kdlprecision.com