PTFE Raschig Ring Product Description

The PTFE Raschig Ring is the oldest and most fundamental random packing design, consisting of a simple hollow cylinder with equal height and diameter, manufactured from 100% virgin polytetrafluoroethylene (PTFE). Unlike the more complex PTFE Pall Ring, the Raschig Ring has no internal tongues or windows—this simple geometry provides the highest possible voidage, lowest pressure drop, and greatest resistance to clogging, making it ideal for services with high throughput requirements or solids-laden streams. PTFE's exceptional chemical inertness protects against virtually all substances including aqua regia, hydrofluoric acid, and boiling sulfuric acid, while maintaining mechanical integrity from -100°C to +260°C. Its non-stick surface resists fouling and scaling, and extremely low extractables make it suitable for high-purity pharmaceutical and electronic chemical processing.

Product Highlights

• Universal Corrosion Resistance: PTFE is inert to virtually all chemicals—including aqua regia, HF, boiling sulfuric acid, and all organic solvents—ensuring indefinite service life in the most aggressive environments.
• Extraordinary Temperature Range: Performs continuously from -100°C to +260°C, covering cryogenic and high-temperature services that exceed the limits of PP, PVC, PVDF, and even some metals.
• Simple & Economical Design: The hollow cylinder geometry eliminates complex internal structures, reducing material and manufacturing costs compared to Pall rings while providing the highest voidage and lowest pressure drop.
• Superior Anti-Clogging & High Flux: With no internal tongues or narrow openings, solids and slurries pass through freely, making it ideal for fouling services and systems with suspended particles.
• Ultra-High Purity & Low Extractables: 100% virgin PTFE contains no plasticizers, stabilizers, or additives, ensuring no contamination in pharmaceutical or electronic chemical processes.
• Carbon Fiber Reinforced Grade Available: A carbon fiber composite version provides enhanced temperature resistance up to 220°C and improved mechanical strength for demanding high-temperature packed beds.