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Landmark Sealing Material Technology |
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Ecopur (TPU) Green : |
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![](landmark_material/ecopur.jpg) |
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Ecopur is a thermoplastic polyurethane elastomer, which has an unusually high
abrasive resistance, low compression set, high physical properties and tear
strength. In sealing technology Ecopur is mostly used for U-rings, lip seals,
wipers and chevron packings, but it may also be used for dampers and other
machined parts. Products made from this material can be used in mineral oil, in
water up to 40°C and in bio- degradable hydraulic oils like vegetable oils and
synthetic esters up to 60°C (in these hydraulic fluids its better to use
H-Ecopur instead of Ecopur). Depending on the seal design and the installation
housing seals made of Ecopur can be used up to 400 bar (for higher pressure
anti- extrusion-rings are necessary).
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H-Ecopur (TPU) Red : |
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![](landmark_material/h_ecopur.gif) |
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H-Ecopur is a hydrolysis-resistant thermoplastic polyurethane elastomer. It
combines the engineering properties of Ecopur with a high resistance to
hydrolysis (hydrolysis is degradation in water) which is otherwise rarely found
in polyurethane's. It is stable in water up to +90°C and has an outstanding
stability in mineral oil. Because of its resistance to hydrolysis H-Ecopur can
be used for water hydraulic and for applications in mining, tunnelling and
manufacturing of presses. H-Ecopur is particularly recommended for the use in
pure and seawater, for HFA and HFB fluids and biologically degradable hydraulic
fluids (vegetable oils and synthetic esters) and food articles. H-Ecopur is KTW
approved and meets the FDA standards. |
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G-Ecopur (CPU) Red : |
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![](landmark_material/h_ecopur.gif) |
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G-Ecopur is a cast hydrolysis-resistant polyurethane-elastomer with similar
properties to H-Ecopur especially regarding its chemical stability. G-Ecopur can
be used in the same hydraulic fluids as H-Ecopur. Generally, G-Ecopur is used
for seals with a diameter from 540mm up to 4000 mm. |
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T-Ecopur (TPU) Blue : |
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![](landmark_material/t_ecopur.jpg) |
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T-Ecopur is a thermoplastic polyurethane-elastomer, which is modified for deep
temperature applications. The properties of T-Ecopur are similar to those of
Ecopur, but the minimum service temperature is extended to - 50°C. For that
reason T-Ecopur should be used under severe climatic conditions and for
applications in freezing plants. |
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S-Ecopur (TPU) Grey :
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![](landmark_material/s_ecopur.jpg) |
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The new polyurethane brand has been optimised in regard of the tribological
characteristics (friction and wear), achieved by an addition of a synergetic
combination of solid lubricants. This special material is therefore best suited
for most severe applications in the water hydraulics as well as in the oil-free
pneumatics.
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Ecorubber 1 (NBR) Black :
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![](landmark_material/ecorubber1.jpg) |
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Ecorubber 1 is an elastomer based on acrylonitrile-butadiene rubber which is
used for U-rings, chevron packings, special seals and various components. This
material has a good resistance to mineral oils and greases and HFA, HFB and HFC
pressure fluids. However, the material is not resistant to glycol-based brake
fluids, HFD fluids, aromatic fluids (such as benzene), esters, ketones and
amines or concentrated acids and bases.
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Ecorubber-H (H-NBR) black :
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![](landmark_material/ecorubber_h.jpg) |
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Ecorubber-H is a hydrogenated or saturated acrylonitrile-butadiene rubber, which
is suitable for applications in aliphatic hydrocarbons like propane or butane
and mineral oils and greases (for short times up to 170°C) and also for
sulfonated crude oil. Furthermore, it can be used in many diluted acids and
bases and salt solutions even at elevated temperatures and in glycol-water
mixtures. Ecorubber-H is not compatible with fuels with a high content of
aromatic hydrocarbons (premium blend petrol), gasoline's (petrol / alcohol
blends) ketones, esters, ethers and chlorinated hydrocarbons like
trichloroethylene and tetrachloroethy-lene.
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Ecorubber 2 (FPM,NBR) brown :
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![](landmark_material/ecorubber2.jpg) |
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Ecorubber 2 is an elastomer based on fluororubber (VITON: registered trade name
of Du Pont) which can be used for U-rings, lip seals, chevron packings, wipers
and special seals. Its outstanding properties are high resistance against heat,
weathering, ozone and many chemical ingredients. Ecorubber 2 is compatible with
mineral oils and greases containing sulphur, HFD pressure fluids (nearly all
phosphate esters and chlorinated hydrocarbons), crude oil and sour gas.
Ecorubber 2 is not resistant against anhydrous ammonia, amines, ketones, esters,
hot water and low molecular weight organic acids.
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Ecorubber 3 (EPDM) black :
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![](landmark_material/ecorubber3.jpg) |
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Ecorubber 3 is an elastomer based on ethylene-propylene rubber, which can be
used for U-seals, lip seals and chevron packing. Ecorubber 3 has an outstanding
stability against hot water, steam, washing agents and polar organic solvents.
Ecorubber 3 is not resistant against mineral oil and other unpolar media. The
stability to weathering, ozone and ageing is good. If it is intended to use
Ecorubber 3 in glycol-based brake fluids, national regulations have to be
adhered to.
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Ecosil (MVQ) reddish brown :
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![](landmark_material/ecosil.jpg) |
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Ecosil is a silicone rubber, which can be used for O-rings, gaskets and special
seals. Owing to the poor mechanical properties, which are noticeably lower in
comparison to other rubbers, Ecosil is mostly used for static (non-moving)
applications. Ecosil is highly resistant against weathering, ozone and ageing.
The compatibility with mineral oils depends on the content of aromatic
hydrocarbons in the oil.
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Ecoflon 1 (PTFE-virgin) white :
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![](landmark_material/ecoflon1.jpg) |
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Ecoflon 1 is a thermoplastic on the basis of polytetrafluoroethylene that is
used for back-up rings, chevron packings, O-rings, rotary seals and gaskets.
Ecoflon 1 has the widest application range of all sealing materials. Seals made
of Ecoflon 1 will only be attacked by molten alkali metals and elementary Fluor
at high temperatures. Using PTFE seals, it should be noted that creeping occurs
at relative low loads (pressures).
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Ecoflon 2 (PTFE-PTFE-with fillers) grey :
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![](landmark_material/ecoptfe.jpg) |
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Ecoflon 2 is a polytetrafluoroethylene filled with glass fibres and molybdenum
disulphide and can be used for U-rings, glide (slide) rings, anti-extrusion
rings, back-ups, for chevron packings and guide rings. Because of its special
composition, Ecoflon 2 has good physical properties and distinctly better creep
behaviour than virgin PTFE. The chemical resistance is similar to virgin PTFE;
some ingredients can cause destruction of the fillers.
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Ecotal (POM) black :
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![](landmark_material/ecotal.jpg) |
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Ecotal is a semi-crystalline polyacetal-copolymer which is used for anti-
extrusion rings, guide ring bushes, scrapers and for precision-machined parts
with tight tolerances. Ecotal is one of the most important engineering
thermoplastics with good physical properties, low water absorption and good
chemical resistance. Ecotal can be used in mineral oils, in water-based
fire-resistant hydraulic fluids (HFA, HFB and HFC fluids). Concentrated acids
and bases will attack and destroy it.
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Ecomid (PA) black :
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![](landmark_material/ecotal.jpg) |
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Ecomid is a cast polyamide with good sliding properties and is used for back-up
rings, guide rings and bearing components instead of Ecotal for a diameters
above 260 mm. Ecomid can be used in mineral oils and water- based fire-resistant
hydraulic fluids. When designing parts out of Ecomid for an application in water
or water-based fluids, the swelling of the material (Ecomid absorbs water up to
eight weight percent) must be taken into account.
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Ecopaek (PEEK) :
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![](landmark_material/ecopaek.jpg) |
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Ecopaek is a polymer with high tensile strength, stiffness, high heat distortion
temperature and good sliding and friction behavior. As far as strength and
stiffness are concerned, Ultrapek exceeds most technical plastics especially at
high temperatures. |
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Special Materials :
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Special Materials AFLAS, any thermoplastic with mineral-reinforced polyamides,
high temperature plastics like Polyphenylsulfide, etc.. All standard materials
can be modified by Economos to achieve tailor- made and optimised sealing
solutions. |
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