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Massive Hobby Parts Sellout!

Hobbyparts.com.au is selling off all hobby specific items at extremely reduced pricing. Please browse the website for special pricing on all items. Small Parts and Bearings will be taking over any non deleted ranges.


Petp - Materials - Technical
Hobby and Engineering Supplies

PETP - Polyethylene Terephthalate Polyester

HES Products made from this material
Rod, Bushes

PETP - Polyethylene Terephthalate Polyester is a very hard and stiff material with little water absorption. Hobby and Engineering Supplies supply Polyester under the Dotmar tradename ErtalyteTM

Properties of PETP

Physical Properties
PROPERTY UNIT VALUE
Density g/cm3 1.3-1.4
Surface Hardness Rockwell M 94-101
Tensile Strength MPa 80
Tensile Modulus GPa 2-4
Max Operating Temp. oC 115-170
Water Absorption % 0.1
Oxygen Index % 21
Flammability  : Self Extinguishing
Volume Resistivity ohm.cm >1014
Dielectric Strength kV.mm-1 17
Dissipation Factor @ 1kHz 0.002
Dielectric Constant @ 1kHz 3.0
Heat Deflection Temp. @ 0.45 MPa oC 115
Heat Deflection Temp. @ 1.80 MPa oC 80

Chemical Resistance
Chemical Resistance
Acids (Concentrated) Good
Acids (Dilute) Good
Alcohols Good
Alkalis Poor
Aromatic hydrocarbons Fair
Greases and Oils Good
Halogens Good
Ketones Good

Note! Property values are typical and should be used only as a guide to selection of materials and not as purchase specifications.


You can purchase online at Hobby and Engineering Supplies Poyester Online Catalogue pages.


For a huge range of bearings online please visit the Bearing Shop Online Website.

The Small Parts and Bearings has a much larger range of engineering supplies.

For the best range of miniature and small bearings please try the Miniature Bearings Australia website. Miniature Bearings Australia also list a large variety of miniature engineering products.



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Hobby and Engineering Supplies offers 2322 products in 238 categories including spare parts for remote control cars, assortment kits, kites, styrene, depron, ceramic and ceramic hybrid bearings, bearings, tools, belts and adhesives - see the full listing in the Online Catalogue. We have excellent Freight Rates within Australia and worldwide. We offer a choice of delivery with a signature required, or cheaper options with no signature required. The no signature required options are at the customer’s risk once the goods leave our store.

Using the links throughout this site you will find extensive information including catalogues, technical data, and other product specific information. We sell our products worldwide through our online store and our overseas freight rates are competitive for fully traceable courier delivery.

Hobby and Engineering Supplies is part of MBA Group offering a select range from the MBA Group catalogue.

Information on this website is Copyright Hobby and Engineering Supplies 1997. All rights reserved.