BUTYL
RUBBER
Properties
and Applications
Butyl rubber (IIR) is the copolymer of isobutylene and a small
amount of isoprene. First
commercialized in 1943, the primary attributes of butyl rubber
are excellent impermeability/air
retention and good flex properties, resulting from low levels
of unsaturation between long
polyisobutylene segments. Tire innertubes were the first major
use of butyl rubber, and this
continues to be a significant market today.
The development of halogenated butyl rubber (halobutyl) in
the 1950's and 1960's greatly
extended the usefulness of butyl by providing much higher
curing rates and enabling covulcanization
with general purpose rubbers such as natural rubber and styrene-butadiene
rubber
(SBR). These properties permitted development of more durable
tubeless tires with the air
retaining innerliner chemically bonded to the body of the
tire. Tire innerliners are by far the
largest application for halobutyl today. Both chlorinated
(chlorobutyl) and brominated
(bromobutyl) versions of halobutyl are commercially available.
In addition to tire applications,
butyl and halobutyl rubbers' good impermeability, weathering
resistance, ozone resistance,
vibration dampening, and stability make them good materials
for pharmaceutical stoppers,
construction sealants, hoses, and mechanical goods. The total
annual demand for Butyl Polymers
is ~650,000 Metric Tons.
Butyl
Rubber, Bytyl Rubber, Butyl Rubber Suppliers, Butyl Rubber
Manufacturing, Butyl Rubber Specs, Butyl Rubber Sheet, Butyl
Rubber Tape
ACETAL
DELRIN
Delrin®
acetal copolymer resin has high tensile strength, stiffness,
resilience, fatigue endurance, a low coefficient of friction,
and moderate toughness. It provides predictable mechanical,
chemical, and electric properties over a broad temperature
range for long periods. Good lubricity and resistance to wear
make this a good choice for bearings as well as other demanding
applications. It has low moisture absorption and is resistant
to a wide variety of solvents, including alcohols, aliphatics,
aromatics, aldehydes, ketones, ethers, oils, greases, and
gasoline.
Delrin
acetal copolymer resin, Delrin acetal material, Delrin acetal
suppliers, Delrin acetal technical spec, acetal delrin plastic,
acetal delrin plastic shims and gaskets manufacturing, plastics
C.V.F
- COMPRESSED VEGETABLE FIBRE ( GASKET PAPER)
COMPRESSED VEGETABLE FIBRE ( GASKET PAPER)
Excellent resistance to fuel and vegetable oils, petrol and
petroleum distillates Temp Range -22oC + 120oC + .Max Pressure
20 bar .+ Range .006" to .060" (0.15 to 1.5 mm).
C.V.F
is a highly compressible, special blend of cellulose fibers
treated with glue-glycerin binder rendered insoluble by means
of a tanning solutions which gives it strong flexible , oil
proof qualities with excellent sealing ability.
Experience
has shown sealing failures often come from minute leakages
between the gasket and the flange , due to “tiny”
imperfections normally found on flange surfaces. C.V.F. material
is highly capable to compensate for distortion in flanges
making it an “ideal” general purpose gasket material.
COMPRESSED
VEGETABLE FIBRE, CVF, Gasket Paper, cvf suppliers, COMPRESSED
VEGETABLE FIBRE manufacturing, vegetable fibre, c.v.f, plastic
shims & gaskets, plastic cvf, cvf paper
ECCOSORB
Lining
radar nacelles; masts of ships, and the exterior of airframes
particularly where high power is present. Lining of cavity
backed and shrouded telecommunication antennas where narrowband
performance is required For module interference, cavity resonance
and surface current problems, ECCOSORB® GDS, ECCOSORB®
MCS and ECCOSORB® BSR are recommended due to their magnetic
properties, broad band performance as well as the availability
of a wider range of thickness' (0.010" to 0.100").
Eccosorb. absorbing materials, Eccosorb, Eccosorb Sheets,
Eccosorb Specification, Eccosorb microwave, ECCOSORB GDS,
ECCOSORB MCS, eccosorb suppliers & manufacturers, plastic
shims
EPDM
EPDM
stands for Ethylene Propylene Diene Monomer. Engineering specifications
describe EPDM as "Ideal for outdoor applications because
of its excellent resistance to ultra-violet light, ozone,
oxidants, and severe weather conditions."
HIGHLY
FLEXIBLE
Stays flexible in temperatures from -40° Fahrenheit to
175° Fahrenheit making it easy to install year round.
Unlike other liner materials, it does not contain plasticizers
that could make it become brittle with age and cause cracks
or splits in the material; threatening aquatic life.
DESIGN
VERSATILITY
EPDM's flexibility provides more versatility in numerous designs.
Unlike preformed liners, it can be easily shaped to fit the
unique contours of a specfic dimensions, allowing a more creative
design.
WEATHER
RESISTANT
Remarkable resistance to the harmful effects of ultraviolet
radiation (UV), ozone and other environmental conditions.
EPDM
is Ethylene Propylene Diene Monomer. EPDM (Ethylene Propylene
Diene Monomer) is excellent for hot water and steam service
up to 325° F. It is very abrasion resistant and has excellent
resistance to ozone, sunlight or weather and de-ionized water.
EPDM (Ethylene Propylene Diene Monomer) also has good tensile
strength and good resistance to mild acids, alkalis and alcohols.
Rated -65° F to 350° F (short term to 400°F).
EPDM,
Ethylene Propylene Diene Monomer, Ethylene Propylene Rubbers,
EPDM Suppliers, EPDM Spec, EPDM rubber, EPDM stands for Ethylene
Propylene Diene Monomer
ELEPHANTIDE
Elephantide
( blue: grade 4)
Exhibits a unique combination of superior electrical strength,
mechanical toughness and flexibility and has a proven durability
under the most arduous service conditions.
Over the years improvements have been of better raw material
sources and processing techniques. The furnish is threads
and first grade cotton linters made by taking advantage modern
developments in made up using new cotton pulp.
Composites of Elephantide® Grade 4 multi-ply presspaper
and polyester film find use predominantly as motor slot and
overhang insulation in Class 'E' rated rotating machines.
This combination is particularly suited for punching, creasing
and forming and is used in a wide variety of electrical, domestic
and industrial appliances.
Other colours available.
Elephantide,
Elephantide Rolls, Elephantide Suppliers, Elephantide Specifications,
Elephantide sheets, Plastic Shims & gaskets.
HDPE
HDPE
is the high density version of PE plastic. It is harder, stronger
and a little heavier than LDPE, but less ductile. Dishwasher
safe.
HDPE
is lighter than water, and can be moulded, machined, and joined
together using welding (difficult to glue).
The appearance is wax-like, lustreless and opaque. The use
of UV-stabilizators (carbon black) improves its weather resistance
but turns it black. Some types can be used in contact with
food.
Anti
corrosive
Radiation resistant
Low cost
Low temperature
Excellent electrical insulating
Non toxic
Low coefficient of friction
Light weight
HDPE
is the high density version of PE plastic. HDPE - high density
polyethylene, HDPE resins, HDPE Plastic, High density polyethylene
Suppliers, HDPE-High density polyethylene Specifications
NATURAL
INSERTION RUBBER
Natural
Insertion Rubber
This rubber product is made of natural rubber with a cloth
inner liner, giving the product a higher tear strength than
ordinary rubber sheeting. Insertion Rubber is used for a variety
of applications including matting, packing, gaskets dust curtains
and mud flaps.
Nitrile Insertion rubber is used for some gasket and diaphragm
applications.
This
rubber product is made of natural rubber with a cloth inner
liner, giving the product a higher tear strength than ordinary
rubber sheeting. Insertion Rubber is used for a variety of
applications including matting, packing, gaskets dust curtains
and mud flaps.
Insertion
rubber is a cheaper alternative to neoprene and is ideal for
applications where sealing properties are less important e.g
machine guards , flooring , etc .
Insertion rubber is effectively rubber bonded with a fine
braiding through the centre.
Natural
Insertion Rubber. Insertion Rubber, Rubber, Insertion Rubber
Rolls, Sheets, Cut to Size Rubber, Insertion Rubber Suppliers,
neoprene rubber, Rubber Product manufacturers.
KAPTON
Kapton®
type HN is a tough, aromatic polyimide film, exhibiting an
excellent balance of physical, chemical, and electrical properties
over a wide temperature range, particularly at unusually high
temperatures. Chemically, its polyimide polymer makeup is
the result of polycondensation reaction between pyromellitic
dianhydride and 4,4' diamino-diphenyl ether.
Kapton® does not melt or burn as it has the highest UL-94
flammability rating: V-0. The outstanding properties of Kapton®
permit it to be used at both high and low temperature extremes
where other organic polymeric materials would not be functional.
Kapton® polyimide film can be used in a variety of electrical
and electronic insulation applications: wire and cable tapes,
formed coil insulation, substrates for flexible printed circuits,
motor slot liners, magnet wire insulation, magnetic and pressure
sensitive tapes, and tubing. Many of these applications are
based on the excellent balance of electrical, thermal, mechanical,
physical, and chemical properties of Kapton® over a wide
range of temperatures. It is this combination of useful properties
at temperature extremes that makes Kapton® a unique industrial
material.
KAPTON
® polyimide film by DuPont is an electrical insulation
material with outstanding thermal, mechanical, chemical and
electrical properties.
KAPTON ® has been used successfully in field applications
where the environmental temperatures were as low as -269°
C and as high as 400° C.
KAPTON ® can be easily fabricated by a wide variety of
techniques, including die cutting, punching and thermoforming.
It offers excellent adhesive bondability as well.
Kapton
type HN is a tough, aromatic polyimide film, KAPTON polyimide
film, Kapton, Kapton tape, Kapton Film, polyimide film, Kapton
Polyimide Film Spec, Kapton
LDPE
- Low Density Polyethylene
L.D.P.E
Low Density Polyethylene is a soft, abrasion resistant material
with an extremely low coefficient of friction. It has high
impact resistance especially at low temperatures. It is a
tough, flexible material that seals well against itself as
well as other harder materials.
Low Density Polyethylene (LDPE): A plastic used predominately
in film applications due to its toughness, flexibility and
relative transparency, making it popular for use in applications
where heat sealing is necessary. LDPE is also used to manufacture
washers, Grinding wheel blotters and it is widely used in
wire and cable applications for its properties and processing
characteristics.
Ease of processing, barrier to moisture, strength/toughness,
flexibility, ease of sealing.
LDPE (Low Density Polyethylene) is the plastic used mainly
to make film for trash bags, food packaging, shrink films,
and construction/agricultural films.
Low
Density Polyethylene is a soft, abrasion resistant material,
LDPE, LDPE - low density polyethylene, LDPE Plastic Sheets,
Ldpe Specs, Ldpe Sheet Suppliers, Ldpe Film, DOW LDPE Resins
MICA
Mica
a type of phyllosilicate is the name given to a group of rock-forming
minerals characterised by highly perfect basal cleavage. This
means that Mica has a tendency to split along planes determined
by crystal structure, yeilding a great number of thin, tough,
plastic laminae. Among the principal rock-forming minerals,
micas are common in all three major rock varieties--igneous,
sedimentary, and metamorphic.
Mica
has an extremely high dielectric strength, low electric loss,
high surface and volume resistivities, excellent thermal stability
and high shear and tensile strengths. It is completely inert
to the action of water, acids, alkalies, oils and solvents.
It is fireproof and noninflammable, unaffected by temperatures
up to 1200 to 1600 degrees F., and is resistant to the oxidizing
action of electrical discharges.
Micas are used in the production of a wide range of products
including; stove windows, boiler gauge packings, as fillers,
as lubricant, absorbant materials, dusting powder, packing
material, wallpaper, roofing paper, paints, in the analysis
of polarised light and are an important source of lithium
and rubidum salts.
Micas excellent electrical, thermal and mechanical stability
leads to its most common use in thermal and electrical applications.
These products are often combined with a range of backing
materials or composites to improve the mechanical strength
or to produce a form that is more easily handled.
Mica, phyllosilicate, Mica Film, Mica Plastic, Mica Spec,
Mica Suppliers, Mica Manufacturers.
NEOPRENE
Description:
One of the earliest of the synthetic materials to be developed
as an oilresistant substitute for Natural Rubber, Neoprene
is a homopolymer of chloroprene (chlorobutadiene).
Temperature
Range: Standard Compound: 45 ºF to +250ºF. (Dry
Heat Only)
Hardness (Shore A): 40 to 90.
Features: Neoprene can be used in innumerable sealing applications,
due to its broad base of such desirable working properties
as: moderate resistance to petroleum oils; good resistance
to ozone, sunlight and oxygen aging; relatively low compression
set; good resilience; and reasonable production cost.
Due
to its excellent resistance to Freonl~l and Ammonia, Neoprene
is also widely accepted as a preferred material for refrigeration
seals.
Limitations: Neoprene is generally attacked by strong oxidizing
acids; esters; ketones; chlorinated, aromatic and nitro hydrocarbons.
Because Nitrile is economically competitive with Neoprene,
and generally has superior performance characteristics in
most situations, it has largely replaced Neoprene in the Orings
of today.
Neoprene
Sheets and Neoprene Rubber, Neoprene, Neoprene Suppliers,
Neoprene Specs, Neoprene Rubber
Nitrile
Rubber
Nitrile
Rubber :
Compounds of these polymers are the backbone of the O-Ring.
They have excellent resistance to petroleum-based products,
hydraulic fluids, most silicone fluids, and fuels. Excellent
resistance to tear and abrasion exhibiting high tensile strength.
Nitrile rubber is the general term for acrylonitrile butadiene
terpolymer.The acrylonitrile content of nitrile sealing compounds
varies considerably (18 to 50%) and influences the physical
properties of the finished material. The higher the acrylonitrile
content, the better the resistance to oil and fuel. At the
same time, elasticity and resistance to compression set is
adversely affected.
A compromise is often drawn and a medium acrylonitrile content
selected. Nitrile has good mechanical properties when compared
with other elastomers and high wear resistance. Nitrile is
not resistant to weathering and ozone.
Good for hydraulic actuator seals, hydraulic pump seals, water
pump seals, carburetor seals, transmission seals.
Resists aliphatic hydrocarbons (propane, butane, petroleum
oil, mineral oil and grease, diesel fuel, fuel oils), vegetable
and mineral oils and greases; HFA, HFB and HFC fluids; dilute
acids, alkali and salt solutions at low temperatures; water
(special compounds up to 212°F (100°C)).
Nitrile
Rubber, Hydrogenated Nitrile Rubber, Nitrile Rubber Suppliers,
Nitrile NBR Rubber, Nitrile Rubber Gaskets
NOMEX
Nomex®
aramide paper type 410 is a calandered electro-insulation
paper of class H (180 degrees Celsius) .It is constructed
of a two-components polyamide polymere. Type 410 has a good
mechanical strength, flexibility and resilience and is an
ideal insulating materials for use at high temperatures.
Nomex® type 410 has a high dielectric strength even without
impregnation. Because of its
Polymere
structure Nomex® type 410 is also suitable for low temperatures
(up to 190 degrees Celsius). Nomex® is neglectably attacked
by common solvents and has very good resistance to acids and
alkalines . It is compatible with all kinds of resins, varnishes
and adhesives as well as transformer liquids, oils and freons.
Nomex® has good rupturing strength and abrasion resistance.
Temperatures up to 200 degrees Celsius do only neglectably
or not at all influence the electrical or mechanical properties
. Also at considerately higher temperatures this material
maintain good values. Nomex® paper is difficult to ignite
and UL approved for temperatures up to 220 degrees Celsius.
Nomex®
type 410 is used for almost all known applications where web
shaped electric insulation is required. The use in dry transformers
,yokes, liquid transfomers, insulators, alternating and direct
current motor and big size generators is possible.
The material is also ideal for use as slot liner.
NOMEX®,
developed by DuPont for applications requiring dimensional
stability and excellent heat resistance, is available in fibre
form (continuous filament and staple) and sheet form (paper
and pressboard). NOMEX® products are used in protective
apparel, hot gas filtration, and automotive hoses, electrical
insulation, aircraft parts, and sporting goods. Fibres of
NOMEX® consist of long rigid molecular chains produced
from poly-metaphenylene diamine. NOMEX® does not flow
or melt upon heating. Decomposition and charring does not
proceed at a significant rate until well over 350° C -
without melting. NOMEX® is both chemically and thermally
very stable.
Nomex®,
Nomex Laminations, Nomex Suppliers, Nomex aramide paper, Nomex®
Brand paper & board.
NYLATRON
NYLATRON:
Nylatron proprietary formulations ( GSM, GSM-Blue, NSM ) contain
solid lubricants that impart toughness, low coefficient of
friction, and good abrasion resistance and make it an ideal
replacement for a wide variety of materials from metal to
rubber. It weighs only 1/7 as much as bronze. Using Nylatron
reduces lubrication requirements, eliminates galling, corrosion,
pilferage problems, and improves wear resistance and sound
dampening characteristics. Nylatron is an excellent replacement
for bronze bushings and is also commonly used for gears, sheaves,
sprockets, wheels, wear pads, slide pads, thrust washers,
and FPSO bushings.
Nylatron, Nylatron GS Plastic, NYLATRON GSM, Nylatron Sheets,
Nylatron Spec, Nylatron suppliers
POLYCARBONATE
Polycarbonates
Commonly referred to as Lexan®, Polycarbonate is a thermoplastic
used in many applications that require high impact strength,
a large temperature service range, excellent electrical properties,
and dimensional stability. Polycarbonate Sheet is smooth and
clear. Normal forming temperature of Polycarbonate . Polycarbonates
are tough, inert, transparent plastics, made by the reaction
of carbonyl chloride with a dihydroxy compound such as diphenylol
propane.
The many uses of polycarbonates include compact discs, outer
shells of cycling or skateboarding helmets, feeding bottles
and to provide the shatterproof “glass” required
for bus shelters, phone booths, visors, car headlamps and
other applications that require glass “clear”
window shielding.
In addition there are the polycarbonates used for electrical
insulation , which can be UL rated.
POLYCARBONATE,POLYCARBONATEPLASTIC,POLYCARBONATE
SPEC, POLYCARBONATES, Lexan.
POLYPROPLENE
Polypropylene is exceptionally tough,with a high strength
to weight ratio and excellent resistance to many chemicals
over a wide temperature range. It can be die-cut easily,and
can be hot or cold creased to provide an intregral hinge capability
of many thousands of flexings.
Polypropylene
sheet may, subject to chemical resistance considerations,
be used over the temperature range -20 degrees Celisus to
90 +degrees Celisusin certain circumstances, intermittent
exposure up to 135 degrees Celisus is permissible.
Polypropylene
has excellent resistance to a wide range of chemicals and
in contrast to Polyethylenes,does not suffer from envoirnmental
stress cracking by detergents and other surface active agents.
Polypropylene can be used in mechanical, packaging and electrical
insulation industries, aswell as many more market areas.
Die-cut components or sheet can be supplied.
Polyproplene,
Polyproplene Polyester Films, Polyproplene Plastics, Polyproplene
Spec
POLYSTYRENE
HIPS
High-Impact Polystyrene
High-Impact Polystyrene is a low-cost plastic material that
is easy to machine and fabricate. It is often specified for
low-strength structural applications when impact resistance
is required. Because of its dimensional stability and ease
of painting and gluing, HIPS is frequently chosen for machining
pre-production prototypes. In its natural (translucent white)
form, HIPS is FDA-compliant for use in food-processing applications,
but it is also available in custom colors.
Key Properties
Resistance to mineral oils, organic acids, and alkalis
Good electrical properties
Light weight
High rigidity and hardness
Excellent aesthetic qualities
Typical
Applications
Machined prototypes
Low-strength structural components
Housings
Covers
Polystyrene,
High Impact Polystyrene HIPS, HIGH IMPACT POLYSTYRENE, HIPS
Suppliers, Polystyrene
PTFE
- Poly Tetra Fluoro Ethylene
PTFE - Poly Tetra Fluoro Ethylene is the most chemical resistant
plastic known. It offers useful mechanical properties from
cryogenic temperatures to over 500° F. Impact strength
is high, but tensile strength and wear resistance are low
compared to other engineering plastics. Coefficient of friction
is lower than almost any other material. "Slippery"
surface makes it difficult to make anything adhere. Use in
corrosive or high temperature applications.
PTFE has become the material choice when looking for a unique
combination of properties to provide performance unmatched
by any other polymer. PTFE and PTFE with selected fillers
offer the following exceptional characteristics:
excellent
chemical resistance and exceeds that of all other thermoplastics
and elastomers. Thus the resistance to swelling is good in
almost all media
very wide service temperature range from -260°C to +260°C
PTFE still has some elasticity and therefore it can be used
for seals and constructional parts, for example, with liquefied
gases.
Unsurpassed
dielectric properties.The electrical insulating properties
are outstandingly good. They are almost independent of frequency,
temperature and weathering effects. High purity and inertness
the lowest coefficient of friction of any solid a broad range
of mechanical properties .Thermal expansion, like most plastics,
is 10 times that of metals. The thermal conductivity is low
so that removal of heat from bearings and from other moving
seals can lead to problems The material is not elastomeric
but is hard like polyethylene.
For
these reasons, elastomeric seals in assemblies cannot simply
be replaced by PTFE seals. With lip seals, provision must
be made for a constant additional contact pressure by use
of springs or by other means. PTFE is filled with graphite,
glass fibers, bronze and carbon to achieve special properties.
PTFE,
Fluoroplastics PTFE, PTFE Poly Tetra Fluoro Ethylene, PTFE
Plastics, Polymer.
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