PP Intalox Saddle combines polypropylene construction with saddle-type random packing geometry and is represented in DAIER's engineering database in 25, 38, 50 and 76 mm sizes. Its selection should first confirm PP compatibility with the actual chemistry and temperature, then evaluate geometry, size, hydraulics, fouling, tower diameter and tower-internal compatibility.

Plastic Cascade Mini Ring is available in DAIER's verified 16, 25, 38, 50 and 76 mm series. Increasing size reduces specific surface area and packing factor while generally increasing void fraction, so final selection should balance mass-transfer demand, gas throughput, fouling, tower diameter and support-grid compatibility rather than simply choosing the smallest or largest model.

PVC Intalox Saddle is a material-specific plastic random packing represented in DAIER’s engineering database in 25, 38 and 50 mm sizes. It is most relevant where PVC is chemically and thermally suitable and saddle geometry fits the gas-liquid contacting duty; final selection should also consider fouling, hydraulics, tower diameter, distributor performance and supplier-specific product data.

PVC Raschig Ring is a simple cylindrical random packing represented in DAIER's Engineering Assistant in 25, 38 and 50 mm sizes. It is most relevant where PVC is chemically and thermally suitable and simple Raschig Ring geometry matches the tower duty; final selection should also confirm fouling, hydraulics, tower diameter, support-grid compatibility and the approved supplier datasheet.

PVC Pall Ring is a material-specific plastic random packing represented in DAIER's engineering database in 25, 38 and 50 mm sizes. Its useful application range depends on verified PVC chemical and temperature compatibility together with Pall Ring hydraulics, fouling conditions, tower diameter and supplier-specific physical data.