Polyethylene Terephthalate [PET]
General Engineering Plastics 120°C
- High mechanical strength, stiffness and hardness
- Very good creep resistance
- Low and constant coefficient of friction
- Excellent wear resistance [comparable with or even better than nylon grades]
- Moderate impact strength
- Very good dimensional stability [better than polyacetal]
- Excellent stain resistance
- Better resistance to acids than nylon or polyacetal
- Good electrical insulating properties
- Physiologically inert [suitable for food contact]
- Good resistance to high energy radiation [gamma and X-rays]
- PET is sensitive to notches and impact. Internal corners should therefore be rounded to reduce stress concentrations, with a radius greater than 1 mm where appropriate.
- Chamfering is also recommended to help prevent cracking and edge breakage during machining operations such as turning, drilling, and milling.
- Heavily loaded bearings (bushings, thrust washers, guides, etc.)
- Dimensionally stable precision parts (bushings, slideways, gears, rollers, pump components, etc.)
- Electrically insulating components