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Most of the production of thermoplastics consists of polypropylene grades in various versions. In addition to polyethylene, high-performance plastics are also used. Regenerates are only processed upon special request.
Depending on the stress caused by temperature and chemical attack, the following quality grades of engineering plastics may be selected.
| ENGINEERING PLASTICS | SUITABILITY |
| POLYPROPYLENE Raschig Ring | Almost all Acids and Dilute Caustic Solutions (low pH) upto 70 Deg. C (158 Deg. F) |
| HDPE Raschig Ring | Almost all Acids and Dilute Caustic Solutions (low pH) upto 55 Deg. C (131Deg. F) |
| PVDF Raschig Ring | Almost all Acids and Strong Caustic Solutions (low pH) upto 130 Deg. C (266 Deg. F) |
| PFA Raschig Ring | Almost all Acids and Dilute Caustic Solutions (low pH) upto 210 Deg. C (410 Deg. F) |
| FEP Raschig Ring | Almost all Acids and Dilute Caustic Solutions (low pH) upto 356 Deg. C (410 Deg. F) |
| PTFE Raschig Ring | Almost all Acids and Dilute Caustic Solutions (low pH) upto 210 Deg. C (410 Deg. F) |
| Size | Nos. / Cu.m. | Surface m2 / m3 | Voidage % | Packing Factor F |
| 25 mm | 51,000 | 210 | 86 | 137 |
| 38 mm | 13,500 | 135 | 90 | 82 |
| 50 mm | 6,500 | 100 | 92 | 57 |
