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Rubber Product Materials, EPDM Foam, Closed Cell Sponge Rubber, and More


All Materials Are RoHS and DFARS Compliant!
*Click Material Title to Download MSDS and Technical Data Sheets*
 

Closed Cell Sponge Rubbers
Closed cell sponge rubber can be formulated into several different elastomeric materials in a
variety of densities. The most common materials are Neoprene/EPDM/SBR blend, Neoprene,
EPDM, and Silicone. Sponge rubber can be specified in low, medium, or high density
firmness's. It is a highly flexible material that can adapt to seal almost any surface application
when used with pressure sensitive adhesives or with Heat Activated Tape Systems (HATS).
Closed cell sponge rubber, or expanded rubber, is composed of individual cells that are a lot like
balloons; they hold in gas and do not allow moisture to penetrate their walls so long as the cell
walls do not burst. The cells in closed cell sponge rubbers are not interconnecting, meaning they
do not allow air or water to wick through the sponge at low pressures.
Characteristics:
Controlled compression and recovery characteristics

Shock absorption attributes       Highly effective sealing capabilities

Less flame resistant                  Provide better weather proofing qualities

Applications/Industries:
Medical, Construction & Packaging industries

Medical packaging        Insulation

Floor underlayment        Flotation devices

Anti-rattle uses              Seals

Anti-skid pads               Building materials



EPDM EPDM

This rubber, a copolymer of ethylene and propylene, has outstanding resistance to aging,
weathering, ozone, oxygen, and many chemicals, as well as excellent temperature stability and
steam and water resistance. EPDM also shows an excellent resistance to gas permeability and
aging due to steam exposure. It is an excellent polymer to use in high temperature applications
as it is heat resistant up to 350°F. Ethylene Propylene provides poor resistance to oil and
solvents; however it is fairly good in its resistance to ketones and alcohols. EPDM is not
recommended for usage in food applications or those that expose it to aromatic hydrocarbons.
EPDM would be one of the recommended polymers to use in a bleach application!
Characteristics:
Resistance to aging & weathering
Excellent temperature stabilities
Resistance to water
Applications/Industries:

Automotive weather stripping           Glass-run channels

EPDM Grommets                            Automotive seals

Radiator, garden and appliance EPDM hoses
Electrical insulations and stinger covers

Roofing membranes                         EPDM belts

Plastic impact modification               Rubber mechanical goods

Water system O rings and hoses       Ozone exposure applications

Automotive cooling systems


Foam Rubber
Foam rubber is found in a wide range of applications, from cushioning in automobile seats and
furniture to insulation in walls and appliances to soles and heels in footwear. Foams are made
by forming gas bubbles in a plastic mixture, with the use of a blowing agent. Foam manufacture
is either a continuous process for making laminate or slab stock or a batch process for making
various shapes by cutting or molding. Rubber's foam rubber products offer cost-effective sealing
and cushioning solutions.
Characteristics:
Resistance to UV, weathering, fungi and oxidation
Resistance too many solvents and chemicals
Ability to be laminated
Can be supplied with pressure sensitive adhesives
Applications/Industries:
Cushioning for furniture and automobiles

Automotive trim       Chemical resistance properties for fire & burning, ultraviolet uses etc.

Shoe soling             Insulations in refrigerators, freezers, buildings, transport vehicles



Natural Rubber (Gum Rubber)
Natural rubber is an elastomer that was originally derived from milky latex found in the sap of
some plants. The purified form of natural rubber is the chemical polyisoprene, which can also
be produced synthetically. Natural rubber is used extensively in many applications and products,
as is synthetic rubber. Natural rubber is an ideal polymer for dynamic or static engineering
applications. Natural rubber cannot compare with many synthetics for heat aging and resistance
to sunlight, oxygen, ozone, solvents or oil.
Characteristics:
Excellent dynamic properties with a low hysteresis loss
Good low temperature properties
Strong bonding to metal parts
High resistance to tear and abrasion
Ease of processing
Applications/Industries:

Hose and tubing        Vibration isolators

Shock mounts           Electrical components

Extremely resilient elastomer


Neoprene Neoprene

This rubber is a polymer of chloroprene and has several valuable properties and works well in
applications requiring resistance to gasoline, sunlight, ozone, and oxidation. Neoprene Rubber,
also known as neoprene polychloroprene, is an extremely versatile synthetic rubber with more
than 75 years of proven performance. It was the world's first synthetic elastomer with oil
resistance and is still the primary choice in a range of applications. In the automotive world,
neoprene is used for many under hood and underbody parts that require a reasonably priced, mid-
performance polymer with a good all-around balance of performance properties.
Characteristics:

Versatile with oil resistance       Sunlight & Ozone resistance

Resistance to oxidation             Good all around properties

Applications/Industries:

Automotive             Conveyor Belts          Industrial Hoses

Construction           O'Rings                    Grommets and vibration parts

Wire and cable       Oil-resistant rubber mechanical goods



NEOPRENE/EPDM/SBR Blend Rubber NEOPRENE/EPDM/SBR Blend Rubber

Sponge rubber foams are used in applications such as gasketing and sealing.
The material is excellent for general sealing purposes, especially where resistance to moisture
absorption might be important and irregular surfaces are involved. This blended rubber is
generally more durable and suitable for higher temperature applications.
This material is an economical seal with excellent compression. This material can be used to
absorb shocks cushion, deaden sound and seal against, air moisture and light and dust
penetration. The blend of Neoprene and EPDM makes this material moderately resistant to oil
and ozone.
Characteristics:

Sponge rubber is a good water seal under low compression and will operate at intermittent
temperatures up to 250° F.

Color: Black material

Acid Resistant             Good sealing qualities            Deadening sound qualities
Resistance to oils and petroleum products                 Closed cell material

Neoprene/EPDM/SBR elastomeric blend meets ASTM D 1056-67, ASTM D 1056-85, 91, 98, 00,
MIL-R-6130C, MIL-C-3133C, MIL-STD-670B, UL157, UL50, UL508, UL94HF-1, and FMVSS-302
specifications for military and automotive applications.

Applications/Industries:

Shock and vibration cushioning            Weatherproofing          Automotive

HVAC uses to eliminate air leakage       Electrical enclosures


Nitrile
Nitrile (NBR) provides excellent resistance to petroleum oils and gasoline as well as mineral
and vegetable oil. It also offers strong resistance to heat aging often a key advantage over
natural rubber. Nitrile rubber performs well in carburetor and fuel pump diaphragms,
aircraft hoses, seals and gaskets as well as oil-lined tubing. Due to its versatility it’s used
in applications involving not only oil and fuel resistance, but those applications requiring
resistance to heat, abrasion, water, and gas permeability.
Nitrile rubbers material properties make it an excellent solution for sealing applications. The
popularity of this material results from its excellent resistance to petroleum products and its
ability to be compounded for service of temperatures up to 250°F. With these temperature
resistances, the right nitrile rubber compounds can withstand all but the most severe automotive
applications.
Characteristics:
Excellent resistance to oils & gasoline         Water resistance
Abrasion applications                                 Good heat resistance qualities
Applications/Industries:
Oil resistant applications                                    Low temperature applications
Automotive, marine and aircraft fuel systems       Nitrile roll covers
Automotive, Marine & Aerospace


SBR
This rubber, a synthetic copolymer of styrene and butadiene, has a fair resistance to solvents
and chemicals but has excellent water resistance. SBR is a non-oil resistant, low cost material.
It displays a good resistance to water and resilience up to 70 durometer. Its compression set
becomes poorer as durometer increases. SBR rubber also provides good abrasion, wear and
tensile qualities and can be readily substituted for natural rubber in many applications with
significant cost savings. Generally, SBR proves satisfactory against most moderate chemicals
and wet or dry organic acids. It is not recommended to use SBR in applications that involve
ozone, strong acids, oils, greases, fats and most hydrocarbons. Since the material exhibits
excellent resistance to brake fluids as well as good water resistance, synthetic rubber parts are
commonly used in hydraulic brake system seals and diaphragms.
Characteristics:
Low cost           Water resistance            Good wear and tensile qualities
Exhibits excellent resistance to brake fluid
Applications/Industries:
Automotive             Construction              Plumbing
O-rings                  SBR rubber pads       Synthetic Rubber Seals
Rubber gaskets     SBR grommets
Custom molded rubber components for plumbing applications


Silicone
This rubber is a semi-organic synthetic that can be made to withstand temperatures as high as
450° F and as low as -150° F and will remain flexible and serviceable over the entire temperature
range. Silicone sheet gasket material is a very versatile material ideal for a wide range of
applications. Silicone rubber gasket material offers temperature resistance, weather (UV and
ozone) resistance, and fire resistance. Silicone gasket material has very good compression set
resistance allowing it to maintain a proper seal over many years. Silicone gasket material is
not recommended for dynamic applications due to its poor tear strength and tensile. It does not
do well with oils. Silicone rubber offers good resistance to extreme temperatures, being able
to operate normally from -100°C to +250°C. At extreme temperatures, the tensile strength,
elongation, tear strength and compression set can be far superior to conventional rubbers.
Organic rubber has a carbon to carbon backbone which can leave them susceptible to ozone, UV,
heat and other aging factors that silicone rubber can withstand well. This makes it one of the
materials of choice in many extreme environments. Silicone rubber is a highly inert material and
does not react with most chemicals.
Characteristics:
Incredible resistance to extreme temperatures
Better fire resistant properties and excellent electrical insulator compared to natural rubbers
Thermal stability making it possible that properties such as volume resistivity, dielectric strength
and power factor are not affected by changes in temperature
Applications/Industries:
Shaft sealing rings              Spark plug caps
Radiator and automotive heating silicone hoses            Automotive, Construction
O-rings          Window and door silicone seals            Expansion joints
Oven door seals and gaskets           Silicone rubber tubing


Viton®
This rubber, the end product of the copolymerization of highly fluorinated olefins, is resistant
to the effects of ozone, oxygen, and sunlight and finds a unique usage in hot oil environments
where outstanding compression set is required. Viton® fluoroelastomer is well known for its
excellent resistance to aggressive fuels and chemicals, high heat (400°F/200°C), abrasions
and cuts. Viton® also offers superb mechanical properties and can meet many performance
specifications. Viton® was also the first fluoroelastomer to obtain worldwide ISO 9000
registration. Viton® is a registered trademark of DuPont Performance Elastomers.
Following its introduction in 1957 to the Aerospace industry, the usage of Viton® spread quickly
to other industries including the automotive, appliance, chemical and fluid power industries.
Viton® has a strong reputation as a high performance elastomer in very hot and extremely
corrosive environments.
Characteristics:
Resistant to fuels and chemicals                      Resistant to high heat
Resistant to extreme corrosive environments     Superb mechanical properties
Outstanding compression abilities                    Resistant to effects of sunlight, oxygen & the ozone
Applications/Industries:
Fuel system seals & hoses             O-rings
Shaft seals                                    Expansion joints and gaskets
Chemical resistant gaskets             High temperature Viton® gaskets
Power industries                            Chemical & Fluid industries

If you have any questions about EPDM foam, close cell sponge rubber or any of the other rubber materials from above, please contact us and we will be more than happy to answer your questions.