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.

CPVC 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 CPVC compatibility is required and saddle-type geometry suits the tower; final selection should confirm actual chemistry, temperature, mass-transfer duty, fouling, hydraulics, tower diameter and supplier-specific physical data.

CPVC Raschig Ring is a material-specific cylindrical random packing represented in DAIER’s engineering database in 25, 38 and 50 mm sizes. It is most relevant where CPVC compatibility is required and simple Raschig Ring geometry suits the tower; final selection should confirm chemistry, temperature, fouling, hydraulic conditions, tower diameter and manufacturer-specific physical data.

Plastic Q-Pack is a large open-grid random packing with a catalog-confirmed 82.5 × 95 mm geometry, 96.3% free volume, 33.7 kg/m³ bulk density, 1,165 pieces/m³ and a low 23 m⁻¹ dry packing factor. Its strongest engineering position is in towers where hydraulic openness, low bed weight and liquid redistribution are important, while tower diameter, mass-transfer demand, fouling and polymer compatibility still define the final application boundary.