Lennite® UHMW-PE
(ultra high molecular weight polyethylene))
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Download Product Brochure (40kb - pdf)
Download MSDS (267kb - pdf)
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Lennite UHMW-PE is a low friction engineering plastic with excellent chemical resistance and
abrasive wear resistance. Lennite is widely used in conveyors, packaging machinery, and food
processing machinery since it is inherently low friction, wears well, and is not abrasive to mating
parts. Westlake Plastics manufacturers Lennite with extremely low levels of residual stress so
that it can be machined into complex parts with minimal deformation. It is often used to line or
replace abrasion-resistant steel plate in bulk material handling applications when low friction,
corrosion resistance, and excellent wear properties are essential. Natural (white) Lennite is
FDA compliant for use in food processing machinery.
The following physical property information is based on typical values of the base ultra-high
molecular weight polyethylene resin.
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| Electrical Properties |
| Property |
Units |
Test |
Result |
| Dielectric Constant @ 60Hz |
- |
ASTM D150 |
2.30 |
| Dielectric Strength |
kv/cm |
ASTM D149 |
900 |
| Dissipation Factor @50Hz |
- |
ASTM D150 |
0.00019 |
| Dissipation Factor @100Hz |
- |
ASTM D150 |
0.00025 |
| Volume Resistivity |
ohm·cm |
ASTM D257 |
>1016 |
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| Mechanical Properties |
| Property |
Units |
Test |
Result |
| Hardness-Shore D |
- |
ASTM D2240 |
D61 |
| Izod Impact Strength Dbl Notched @ 73°F |
ft•lbs/in |
ASTM D256 |
18 |
| Tensile Elongation @break |
% |
ASTM D638 |
>350.0 |
| Tensile Elongation @yeild |
% |
ASTM D638 |
- |
| Tensile Strength @break |
psi |
ASTM D638 |
6,00 |
| Tensile Strength @yeild |
psi |
ASTM D638 |
2,800 |
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| Other Properties |
| Property |
Units |
Test |
Result |
| Specific Gravity |
- |
ASTM D792 |
0.930 |
| Water Absorption @24 hrs |
% |
ASTM D570 |
Nil |
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| Thermal Properties |
| Property |
Units |
Test |
Result |
| Coefficient of Thermal Expansion |
in/in/°F |
ASTM D696 |
11.0x105 |
| Heat Deflection Temp @66 psi |
°F |
ASTM D6488 |
203 |
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| Applications Include: |
| Packaging and food processing
machinery components |
| Star wheels and guide rails |
| Idler sprockets |
| Timing screws |
| Hopper, chute, truck bed, and railcar
liners |
| Conveyor components |
| Bearings and bushings |
| Under-chain wear strips |
| Advantages of Lennite® UHMW-PE: |
| Excellent abrasive wear resistance |
| Low friction |
| Promotes the flow of bulk material
(sand, soy beans, coals, etc.) |
| Low moisture absorption |
| High impact strength – even at
cold temperatures |
| Excellent chemical resistance |
| FDA and USDA compliant (natural
only), 3A Dairy, NSF Standards 51, 61
on specific resins |
| Low cost |
| Manufacturing Capabilities: |
| Sheet: 1/8” to 6” thick |
| Tube: 11/8” to 31/2” O.D. |
| Color/Grades: |
| Lennite – FDA compliant (natural) |
| Lennite II – non-FDA (natural, gray and
black) |
| Custom colors available in both FDA
compliant and non-FDA grades. |
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*In addition to our standard capabilities, Westlake also
has the ability to process custom resins in various sizes
and colors with some exceptions.
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Lennite® is a Registered Trademark of Westlake Plastics Co.
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