Serving the World since 1944
 

Material Technology


Providing Product Manufactured From
The Correct Polymer Is Our Goal.

Mid-States Rubber Products commitment to excellence begins with our 6,000 sq. ft. Research & Development Center where our chemist develop rubber formulations which can precisely meet our wide ranging customer specifications and requirements.  Those rubber formulations are then compound and mixed with our computer controlled weighing and internal mixing systems.  Following the compounding and mixing processes each batch of rubber is tested by our laboratory and is not released into production until it has met our rigorous quality standards.

Butyl
impermeable to most gases with excellent resistance to weathering and ozone, provides low resilience

CPE
excellent weathering, ozone, oil and solvent resistance

EPDM
provides excellent resistance to ozone, weather, water, and brake fluid

Hydrin
offers excellent oil and solvent resistance with good ozone and abrasion resistance

Hypalon
excellent ozone, oil, solvent, and flame resistance

Natural Rubber
has high resilience and good flexing qualities

Neoprene
moderately oil and solvent resistant

Nitrile
resistant to oil and gasoline

PBR
excellent abrasion with high resilience properties

SBR
general purpose polymer with good water and brake fluid resistance

Silicone
exhibits excellent high temperature resistance

Urethane
offers excellent abrasion resistance

Vamac
excellent heat and oil resistance with good resistance to ozone and weathering

Thermoplastic Elastomers (TPE)
TPR, TPU

For products that require base polymers including plastic resins other than those listed above contact Mid-States Rubber Products, Inc. and our experienced staff will be glad to assist you.

 

Butyl

Butyl Rubber is impermeable to air and most common gases and exhibits excellent resistance to weathering and ozone while offering temperature resistance up to 100 degrees centigrade. Along with providing excellent damping qualities it is normally satisfactory when exposed to animal and vegetable oils and oxidizing chemicals. Butyl is not recommended for use in parts that come in contact with petroleum solvents and aromatic hydrocarbons. Applications include:

• Shock absorption bumpers
• Shock mounts
• Air bladders
• Tire inter liners
• Automotive body mounts

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CPE (Chlorinated Polyethylene)

CPE has excellent weathering and ozone resistance with good resistance to abrasion, oils and solvents. It can be formulated to be used in applications in contact with water. CPE appears to be unaffected in underground applications and works in applications where temperatures reach 125 degrees centigrade. It is not recommended to be used in parts that come in contact with concentrated oxidizing acids, esters, ketones, aromatic, chlorinated and nitro hydrocarbons. Applications include:

• Automotive air induction systems

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EPDM (Ethylene-Propylene Rubber)

EPDM is inherently stable to oxidation, attack by ozone, light and heat. It has exceptional resistance to brake fluid, gas permeability, water, moderate concentrations of chemicals and aging due to steam and heat along with good abrasion. EPDM is not recommended in applications with continual contact to oil and solvents. It can be used in applications where temperatures reach 150 degrees centigrade. Applications include:

• Automotive air induction systems
• Compressor grommets
• Tail pipe hangers
• Hood bumpers
• Hydraulic brake systems
• Electrical insulation

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ECO ( Hydrin, Epichlorohydrin)

ECO has excellent oil and solvent resistance combined with good low temperature performance along with very low gas permeability. It also offers good resistance to abrasion, weathering and ozone while performing in temperatures up to 150 degrees centigrade. It is not recommended to be used in contact with esters, ketones, chlorinated, aromatic and nitro hydrocarbons, and oxidizing acids. Applications include:

• Automotive air induction systems
• Fuel handling components
• Fuel and oil line isolators
• Military oxygen mask hose

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CSM (Hypalon, Chlorosulfonated Polyethylene)

CSM has good ozone resistance, light stability, heat resistance, weather ability and water, solvent and oil resistance. It can be formulated to have good flame resistance with temperature resistance to 125 degrees centigrade. It is not recommended for exposure to concentrated oxidizing acids, esters, ketones, chlorinated, aromatic and nitro hydrocarbons. Applications include:

• Spark plug boots
• SElectrical applications

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Natural Rubber

Natural Rubber has high resilience with good tensile strength, flexing qualities and tear resistance. It is resistant to alcohol and has good low temperature properties. It is not recommended for solvents and oils or where exposed to UV, ozone and high temperatures. Natural Rubber can be used in applications where temperatures do not exceed 70 degrees centigrade. Applications include:

• Spring isolators
• Engine mounts
• Suspension bushings
• Jounce bumpers

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CR (Neoprene, Polychloroprene)

CR is a good general purpose rubber with moderate resistance to oils, solvents, water, fuel aging and weather. It has high resilience, good compression set characteristics and can be formulated for flame resistance. It can be used in applications where temperatures reach 100 degrees centigrade. Applications include:

• Bridge bearing pads
• Oil resistant mechanical goods
• Automotive applications

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NBR (Nitrile-Butadiene)

NBR is a high performance polymer with outstanding physical properties and excellent resistance to temperatures up to 100 degrees centigrade. It has excellent resistance to oils and fuel with good resistance to abrasion. Applications include:

• Oil filter gaskets
• Fuel filter gaskets
• Fuel tank grommets
• Oil seals
• Carburetor diaphragms

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PBR (Polybutadiene)

PBR has excellent abrasion resistance with good water resistance. It is most usually used in blends with NR, SBR, CR, or NBR to improve resilience. PBR is not recommended for applications with exposure to strong acids, ozone, oils, fats, greases and most hydrocarbons. It is temperature resistant to 70 degrees centigrade. Applications include:

• Tires
• Super balls
• Golf ball centers

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SBR (Styrene-Butadiene Rubber)

SBR is a synthetic polymer with properties similar to Natural Rubber. It has good water and brake fluid resistance along with good abrasion resistance. It has better heat temperatures that Natural Rubber. SBR should not be used for applications in contact with strong acids, ozone, oils, fats greases and most hydrocarbons. Applications include:

• Car tires
• Caster wheel treads
• Hard rubber
• Mechanical rubber parts

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Silicone

Silicone exhibits excellent high temperature stability along with very low temperatures resistance with an operating range between minus 100 degrees centigrade to 250 degrees centigrade. It offers low temperature flexibility, weatherability, chemical resistance, electrical resistance and sealing capabilities. It performs well as an electrical insulator and has good burn resistant properties. Applications include:

• Oven door gaskets
• O-rings and seals
• Electronic ignition systems
• Valve cover gaskets and grommets
• Key pads

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Urethane

Urethane exhibits high tensile and tear properties along with excellent abrasion resistance and weathering characteristics. It provides good resistance to oils, solvents, ozone and many chemicals. It should not be used in contact with concentrated acids, ketones, esters, chlorinated and nitro hydrocarbons. Applications include:

• Bumpers
• Isolators

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Vamac

Vamac provides excellent heat and oil resistance. He has good resistance to ozone, weathering, and a wide variety of fluids. It offers good abrasion resistance, vibration damping and low temperature flexibility. Vamac can be used in applications where temperatures reach 175 degrees centigrade. Applications include.

• Rocker cover gaskets
• Oil pan gaskets
• Clutch fork boots

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TPE (Thermoplastic Elastomer)

TPE also known as TRP is a thermoplastic material the has some rubber like properties but process like a plastic material. They can be used in applications where temperatures range from minus 40 degrees centigrade to 125 degrees centigrade. TPE has excellent resistant to polar fluids and fair to good resistance to oils and hydrocarbon fluids while offering good electrical properties. Applications include:

• Under hood automotive applications
• O-rings
• Grommets
• Bushings
• Seals

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