Engineering plastics materials and processed products
Engineering plastics

Ultra High Molecular Weight Polyethylene UHMW

UHMW is an Ultra High Molecular Weight Polyethylene with a molecular weight between 5 and 9 million, making it by far one of the polymer materials with the highest molecular density. It cannot be differentiated with other general High Density Polyethylenes (with molecular weights less than 1 million) regarding characteristics such as color and appearance; however, physically and chemically-wise, UHMW is far superior.

> View Properties TablePDF (117KB)

Characterestics

  • 1. Hard to wear
    Having an incredibly high molecular weight, UHMW proves its worth not only in regards to sliding with metal faces, but also sand, powder and other fields where common wear-resistant materials are not good at.
  • 2. Excellent sliding ability
    UHMW has an extremely low friction coefficient. It is comparable to PTFE, which also slides well.
  • 3. Shock resistance
    UHMW has an excellent shock resistance. It is hard to break UHMW without chemical attack.
  • 4. Non-stickiness
    UHMW is excellent in non-stickiness, close to PTFE. UHMW is clever choice for the inner liners of containers such as hoppers, silos and chutes.
  • 5. Non-toxic and Non-hazordous
    A physically non-toxic material. Great for use with food products, UHMW can be also used in the medical field.
  • 6. Hard to be eroded
    Features excellent chemical resistance.
  • 7. Hard to absorb water.
    Water absorption rate of UHMW is almost zero, therefore its strength does not deteriorate due to swelling caused by water absorption.

Applications

Star wheels, guide parts, screws, bushings, rollers, washers, gears, sliding plates, lining, etc.

Lineup

Grade Color
UHMW-NA Standard White
UHMW-B Standard Blue
UHMW-G Standard Green
UHMW-ASB High Conductivity Black
UHMW-ASN High Antistatic Gray

Caution

  • Don't use UHMW-ASB/UHMW-ASN as electronic parts.
  • When using UHMW-ASB/UHMW-ASN for antistatic applications, a preliminary test with a sample is recommended.

Standard Grade

UHMW-NA (White)

Ultra High Molecular Weight Polyethylene (UHMW-NA) has superior sliding performance and good wear resistance.

Compliant with the RoHS Directive, Food Sanitation Act No370 in Japan, and PIM regulation

Standard Sizes

Rod

(Unit: mm)

Outer diameter Length
10-200 1000

Pipe

(Unit: mm)

Outer diameter Length
13.8-345 1000-4000

Please contact us regarding inner diameter.

Plate

Thickness Width Length
3-120 1000 2000
20-120 990 1000

UHMW-B (Blue)

UHMW-B is blue-colored material with sliding performance and good wear resistance same as UHMW-NA.

Compliant with Food Sanitation Act No370 in Japan and PIM regulation

Standard Sizes

Rod

(Unit: mm)

Outer diameter Length
25-200 1000

Plate

(Unit: mm)

Thickness Width Length
6-50 1000 2000

UHMW-G (Green)

A green material with a sliding performance and abrasion resistance equivalent to NA grades

Compliant with the RoHS Directive and Food Sanitation Act No370 in Japan.

Standard Sizes

Plate

(Unit: mm)

Thickness Width Length
8-80 1000 2000

High Conductivity Grade

UHMW-ASB Black

UHMW-ASB is a grade with high antistatic performance. Its electrical volume resistivity is at a very low level of 102Ω·m, thus making it suitable to use as a static protection in LCD and semiconductor manufacturing equipment.

Compliant with the RoHS Directive and Food Sanitation Act No370 in Japan.

Standard Sizes

Rod

(Unit: mm)

Outer diameter Length
30-120 1000

Plate

(Unit: mm)

Thickness Width Length
5, 6 940 1920
8-120 1000 2000

Antistatic Grade

UHMW-ASN (Gray)

A non-carbon antistatic grade has been developed. This grade also has high wear resistance.

Compliant with the RoHS Directive

Standard Sizes

Rod

Please contact us for size lineup.

Wear Tape

Wear Tape is a pressure-resistant, abrasion-resistant tape made by adding an adhesive to an UHMW polyethylene film. It is designed to easily protect surfaces that are subjected to severe wear.

Having excellent properties such as outstanding abrasion-resistance, superior non-stickiness and a low friction coefficient, Wear Tape is extremely useful as an item kept on hand for machine maintenance and emergency measure.

Applications

Parts with severe wear or friction, transportation of materials and packaged goods, chutes and trough liners

Standards

Width(mm) Roll Length (m)
6.35-457.2 15.5

UHMW Rails

We offer a lineup of UHMW polyethylene rails as guides for conveyance containers. Please select the best match for your container shape and line configuration needs.

We can also cater to orders for rails in special sizes, custom-made to order, so please do not hesitate to contact us.

Applications

Guide parts for conveyors and conveyance lines for glass bottles, cans, etc.

Variations

Flat Rail

Thickness (mm) Width (mm) Roll Length (m)
3-6 15-50 25-50

Chain Rail

Thickness (mm) Width (mm) Length (m)
5-6 20-40 500

End Plate for Chain Rail

Thickness (mm) Width (mm) Length (m)
5-6 20-40 65

L-Type Rail

Length (m)
50

H-Type Rail

Thickness (mm) Width (mm) Length (m)
5-6 20-40 1000

V-Type Rail

Type Length (m)
V3-Type 100
V6-Type 50

C-Type Rail

Type Length (m)
for φ10 3
for φ12 3

K-Type Rail

Length (m)
3

Snap-on Rail

Length (m)
30

A-Type Rail

Type Length (m)
A-Type 3
AⅡ-Type 3

R-Type Rail

Type Length (m)
for φ10 3
for φ12 3
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