Carbon / Graphite Raschig Ring is a specialized random packing family available in DAIER's verified database in approximately 19–50 mm sizes. Smaller rings provide greater specific surface area, while larger models reduce element count and can provide a more open bed; final selection must also confirm the exact carbon/graphite grade, chemical compatibility, operating temperature, fouling condition and mechanical support requirements.

Ceramic Y-Type Partition Ring is a 25–80 mm partitioned ceramic random packing family whose Y-shaped internal structure increases contacting surface while creating additional internal flow passages. Selection should consider actual size-specific data, mass-transfer requirements, fouling, ceramic compatibility, tower diameter and support load rather than assuming performance trends from nominal size alone.

Ceramic Cascade Mini Ring is available in DAIER’s catalog-confirmed 25, 38, 50 and 76 mm sizes, with smaller models providing greater specific surface area and larger models providing greater void fraction and lower bulk density. The correct size depends on mass-transfer requirements, hydraulic load, fouling, tower diameter, ceramic compatibility and support loading.

Ceramic Pall Ring is an open ring-type ceramic random packing used in compatible corrosive and elevated-temperature gas-liquid contacting applications. Selection should balance chemical compatibility, temperature, mass-transfer requirements, hydraulic openness, fouling, packing size, ceramic bed weight and mechanical handling.

Ceramic Super Intalox Saddle is a 25–76 mm ceramic random packing family that shifts from higher contacting-area small models toward more open larger models. Selection should consider chemical compatibility, temperature, mass-transfer requirements, hydraulic capacity, fouling, tower diameter, ceramic bed weight and the actual model specifications.