Custom PTFE Cascade Mini Rings | High-Efficiency Tower Packing

PTFE (Polytetrafluoroethylene) Cascade Mini Rings—commonly known as CMR packing—are advanced random tower packings featuring a low aspect ratio design with a distinctive flared flange or stepped edge. The reduced height-to-diameter ratio ensures that the rings orient themselves predominantly on their flat sides when dumped into a tower, significantly improving gas-liquid flow pathways and mass transfer efficiency.

We manufacture PTFE Cascade Mini Rings in various standard diameters and custom dimensions tailored to your mass transfer column specifications.

Key Product Features & Benefits

• Oriented Bed Structure: The low aspect ratio and flared flange encourage a uniform packing matrix, reducing preferential gas channeling and edge wall flow.

• Low Pressure Drop: High void fraction and open design allow high gas velocity with minimal pressure drop, boosting column processing capacity.

• Superior Chemical Resistance: Fully inert to aggressive chemical media, including strong acids, alkalis, organic solvents, and corrosive gases (pH 0 to 14).

• Wide Temperature Range: Retains structural stability and sealing/packing performance from -180°C to +260°C.

• Non-Stick & Anti-Fouling: PTFE's ultra-low coefficient of friction prevents polymer accumulation, scaling, and particulate clogging.

Technical Specifications & Custom Parameters

• Available Sizes: Standard sizes including 1#, 2#, 3# (or outer diameters from 25mm to 76mm), as well as custom engineered wall thicknesses and flange heights.

• Processing Methods: Precision automatic CNC lathe turning, compression molding, and custom machining.

• Material Options: 100% Virgin PTFE for maximum chemical purity, or filled PTFE (glass fiber, carbon, or graphite) for enhanced compressive strength and dimensional stability under deep packing beds.

Primary Applications

• Gas Absorption & Scrubbing: Scrubbing columns for HCl, HF, SO2, and acid gas removal.

• Distillation & Rectification: Fine chemical separation, solvent recovery, and petrochemical fractionating towers.

• Stripping Towers: VOC stripping, air stripping, and waste gas treatment systems.

• High-Purity Processing: Pharmaceutical, semiconductor, and fine chemical applications requiring metal-free, non-contaminating column internals.

Quality Control & Packaging

• Precise Dimensional Inspection: Outer diameter, ring height, flange flare angle, and wall thickness are strictly checked before shipment.

• Protective Bulk Packaging: Packed in inner protective film bags and sturdy outer export cartons or crates to prevent structural deformation during transit.