Plastic conduits of PVC:
PVC is an inexpensive, versatile material. Although the use of PVC in
particular has been repeatedly criticised in recent years, there are still
many good reasons, primarily technical ones, for resorting to this raw
material. Its excellent chemical resistance (see chapter 11.1), especially
to acids and bases, is an immense advantage for many customers.
Plastic conduits of polyurethane (PUR):
Compared to many other plastic conduit types, NORRES polyurethane
(PUR) conduits have the following distinguishing characteristics:
- Higher mechanical stability
- Less abrasion
- Improved chemical and hydrolytic stability
- Higher softening points
→ Greater residual strength at high temperatures
→ Higher compressive strength
→ Increased safety due to material stability
- Better hot air ageing properties
- Better flexibility at low temperatures
→ Lower “bending force” at low temperatures
→ Lower “risk of bending fracture” at low temperatures
We would like to particularly draw your attention to our group of PUR
conduits that is resistant to microbes and hydrolysis. Our food-quality /
FDA-approved, smooth, polyurethane cable protection products, some
of which also feature a fabric insert for extreme operating conditions,
likewise deserve to be mentioned. If required, NORRES can also manufacture
connectors in VA quality.
However, not all polyurethanes are the same! NORRES uses special
ester-polyurethane and ether-polyurethane mixtures that are differentiated
with the name Pre-PUR® for several of its conduits. Please also refer
to the detailed information on our very high-quality Pre-PUR® polyurethanes
(see chapter 0.2) as well as to the Technical Appendix.
Engineering modifications subject to change. |
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NORCONNECT 231 / NORCONNECT 232
