Fluorocarbon rubber is a
fluorocarbon-based elastomer
containing fluorine in the molecule,
and is divided into different
categories depending on the
fluorine content (i.e., monomer
structure).
The product’s high temperature
resistance is superior to silicone
rubber, with excellent chemical
resistance. It is resistant to most oils
and solvents (except ketones and
esters), weather and ozone. However,
the product’s cold resistance is not
satisfactory, with the regular use
temperature range of -20 ~ 250 °C.
Suitable for use in vehicles,
locomotives, diesel engines, fuel
systems and seals for chemical plants.
- Resistant to heat up to 250 °C
- Resistant to most oils and solvents, in
particular, all acids, aliphatic
hydrocarbons, aromatic
hydrocarbons, animal and vegetable
oils
- Not recommended for ketones,
esters with low molecular weight and
mixtures containing nitrates.
FFKM has the best capability in
heat resistant, acid and alkaline
resistant, and organic solvents
resistant among all elsatomer
materials. It can resist the corrosion
of more than 1600 chemical
solvents such as ether, ketone,
ester, nitrogen-containing
compound, hydrocarbon etc. and
withstand high temperature up to
320°C.
The material is also characterized
by advanced homogeneity which
prevents the leakage or surface
cracking.
Perfluoro elastomer series
products are widely used in the
aerospace industry, nuclear,
semiconductor industry and
information-related industries. Its
application includes etching
processes and various high vacuum
sealing processes.
- Optimum heat resistance
- Excellent chemical resistance
- Poor low temperature resistance
- High raw material cost
- Challenging production process
Nitrile butadiene rubber or nitrile
rubber is copolymerized by
acrylonitrile and butadiene with
acrylonitrile content ranging from
18% to 50%. Nbr is one of the most
commonly used rubbers for oil seals
and O-rings.
With the containing of
acrylonitrile, the higher the
acrylonitrile content, the better the
resistance to petrochemical
hydrocarbon fuel. However, the
performance under low
temperature will be poorer. The
normal temperature range for
product use is from -25 °C to 100 °C.
Used for fuel tanks, lubricant oil
tanks, and to make rubber parts
used in fluid media such as
petroleum hydraulic oil, gasoline,
water, silicone grease, silicone oil,
diester lubricating oil, and glycol
hydraulic oil. It is the most widely
used and cost-effective rubber seal
in the market.
- Good resistance to oil, water,
solvent and high-pressure oil.
- Low permanent compression set
value, good abrasion resistance and
elongation.
- Not suitable for use in polar
solvents such as ketones,
nitrohydrocarbons, MEK and
chloroform. It has poor weather
resistance and needs to be
protected from damage
of ozone and ultraviolet rays.
Hydrogenated nitrile rubber
(Hydrogenate Nitrile) is a kind of
nitrile rubber that has been
hydrogenated to remove part of the
double chain.
After hydrogenation, its
temperature resistance and weather
resistance are much higher than that
of general nitrile rubber. Oil
resistance of HNBR is similar to that
of general nitrile rubber. The
temperature range for product use is
-45 ~ 150 °C.
Generally, it is applicable to the
detergent for washing clothes or
dishes. Widely used in air conditioning
and refrigeration industry, as seals in
the environment-friendly refrigerant
R134a systems. Also broadly used as
automotive engine system seals.
- Better abrasion resistance than
NBR
- Excellent corrosion resistance,
tensile resistance, tear resistance
and compression set
- Good resistance to ozone, sunlight
and other atmospheric conditions
- Not recommended for use in
alcohol, ester or aromatic solutions.
Ethylene propylene rubber
(ethylene propylene diene
monomer) is copolymerized by
ethylene and propylene, double
chains with main chain not
bonded. It has excellent resistance
to polar solvents such as alcohols,
ketones, ethylene glycol and
phosphate ester hydraulic fluids.
EPDM has excellent heat
resistance, aging resistance, ozone
resistance and stability, and its
normal use temperature range is -50
~ 150 °C.
The product can be used in
alcohol and ketone fluids. It has high
temperature and steam resistance,
good impermeability to gas. Suitable
to use as seals in high temperature
and steam environment, bathroom
equipment seals or parts, rubber
parts in the brake system and seals in
the radiator (car water tank)
- Good weather resistance and
ozone resistance
- Poor oil resistance, not
recommended for food-related use
or exposure to aromatic hydrogen
The main chain of silicone
rubber is composed of silicon in the
form of si-o-si. It has excellent heat
resistance, cold resistance, ozone
resistance and atmospheric aging
resistance. It also has good
electrical insulation performance.
Silicone rubber is suitable for
seals or rubber parts used in the
household appliance industry, such
as rubber parts in electric kettles,
electric irons, and microwave ovens
It can also apply for seals or rubber
parts in the electronics industry,
such as mobile phone keys, shock
absorption pads in DVDs, seals in
cable joints, as well as seals used in
various articles which have direct
contact with the human body.
- Good elasticity and compressibility
- Good resistance to neutral solvents
- Excellent heat resistance
- Excellent cold resistance
- Excellent resistance to ozone and
oxide corrosion
- Excellent electrical insulation
- Good heat insulation and heat
dissipation
- The product has low tensile
strength inferior to that of ordinary
rubber and has no oil resistance. Not
recommended for use in most
concentrated solvents, oils,
concentrated acids and diluted
sodium hydroxide.
PTFE is a kind of engineering
material. The PTFE coating is a dry
film that reduces the friction on the
surface of the seal and therefore no
fluid lubricants are needed.
The advantages of PTFE coating
include easy identification, easy
assembly, low friction, and non-
sticky. PTFE coating also provides
advantages for the assembly lines.
We are here to supply qualified and
reliable sealing coating to effectively
reduce the friction coefficient.
- Excellent temperature resistant
- Good to use as insulator
- Excellent chemical resistant
performance
- Poor load capacity
- Poor mechanical properties
Polyurethane rubber has very
good mechanical properties. Its
hardness, elasticity, and wear
resistance are far superior to other
rubber products.
Meanwhile, the product also has
good aging resistance, ozone
resistance, and oil resistance. The
normal use temperature range is
-40 ~ 90 °C.
Application areas include
cylinder seal, electrical system and
other high voltage and high
pressure working environment.
- Wear resistance and high-pressure
resistance
- Suitable for seals with high
pressure and wear resistance
- Suitable for seals used in high
voltage and high-capacity electrical
systems
- Not resistant to high temperature
Polyacrylate rubber is an
elastomer with alkyl ester acrylate
as the main component. It has good
petrochemical oil resistance, high
temperature resistance and
weather resistance.
However, it is not satisfactory in
terms of mechanical tensile,
compression set and water
resistance, inferior to ordinary oil-
resistant rubber. The normal use
temperature range is -25 ~ 170 °C.
The ACM is applicable to
automotive transmission oil,
automotive transmission system,
automotive steering system and
power system seals.
- Good oxidation resistance and
weather resistance
- Has properties of anti-bending and
anti-deformation
- Excellent resistance to oil
- Not suitable for hot water
- Not suitable for brake oil
- Low temperature resistance
- Not suitable for phosphate ester
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