Custom Graphite-Filled PTFE Raschig Rings | Chemical Tower Packing

Product Overview & Customization

Graphite-filled PTFE Raschig rings combine the extreme chemical inertness of fluoropolymers with the mechanical strength, thermal stability, and wear resistance of graphite fillers. Featuring a solid cylindrical design with equal height and outer diameter, these heavy-duty random tower packings deliver consistent bed voidage and liquid film distribution under demanding operating environments.

We supply graphite-filled PTFE Raschig rings in standard dimensions and fully customized wall thicknesses, outer diameters, and lengths tailored to specific column parameters.

Key Features & Performance Benefits

• Enhanced Structural Load Capacity: Graphite compounding increases compressive strength and reduces creep under deep bed packing loads.

• Superior Thermal Conductivity: Graphite filler improves heat dissipation and lowers thermal expansion, maintaining tight tolerances at elevated temperatures.

• Broad Chemical Compatibility: Universal resistance to strong acids (including HF and HCl), caustic solutions, organic solvents, and halogen vapors across pH 0 to 14.

• Anti-Static & Conductive: Disperses static electrical charges safely, making them suitable for volatile organic compound (VOC) stripping and explosive vapor handling.

• Low Friction & Wear Resistance: Maintains long service life under high-velocity gas-liquid contact without wall degradation or particulate shedding.

Technical Specifications

• Outer Diameter (OD): 6mm to 100mm (custom sizes on request).

• Length-to-Diameter Ratio: 1:1 standard ratio (custom cut lengths available).

• Graphite Filler Content: Standard 15% to 25% graphite blend, tailored for required mechanical stiffness or conductivity.

• Operating Temperature: -180°C to +260°C continuous working range.

• Processing Methods: Precision extrusion, compression molding, and CNC lathe machining.

Primary Applications

• Acid Absorption & Recovery Columns: Scrubbers processing hydrofluoric acid, hydrobromic acid, and nitric/sulfuric acid mixtures.

• Harsh Solvent Stripping: Distillation and extraction towers operating with aggressive organic liquids and aromatic hydrocarbons.

• Anti-Static Gas Purification: Scrubbing units requiring static charge dissipation in hazardous zone classifications.

• Heavy-Load Tower Beds: Deeply packed column bases where standard virgin PTFE rings experience deformation or crushing.

Quality Control & Packaging

• Quality Assurance: Outer diameter, wall thickness, inner bore uniformity, and graphite distribution undergo 100% dimensional inspection.

• Export Packaging: Standard export cartons with protective inner lining, or custom wooden crates for bulk container shipments.