Flange‑free HPLC nuts provide flexible, reusable low‑pressure connections using ferrule‑based sealing, offering easy installation and broad compatibility with polymer tubing systems.
Flange‑Free HPLC Nuts
Flange‑free nuts are designed for low‑pressure zones where flexibility, ease of use, and reusability are priorities. Instead of requiring pre‑flanged tubing, these systems use ferrules to create a secure seal, allowing standard tubing to be cut and reconnected as needed.
This design makes them ideal for upstream solvent lines, post‑detector connections, and general lab plumbing.
Key Advantages
No pre‑flanging required – use standard tubing with ferrules
Reusable components – easy to disconnect and reconfigure
Flexible system design – ideal for custom routing and changes
Simple installation – typically low torque and tool‑light operation
Applications
Flange‑free nuts are commonly used in:
Solvent inlet lines and degasser connections
Pump inlet pathways
Waste and post‑detector tubing
General low‑pressure fluid handling
These areas benefit from adaptable connections without permanent tubing modification.
Performance Considerations
For best results:
Match nut and ferrule to tubing OD
Ensure proper ferrule seating during tightening
Avoid over‑tightening to maintain component life
Proper installation provides reliable sealing, minimal leaks, and consistent solvent flow.
Why Choose Flange‑Free Nuts
Flange‑free systems are preferred when laboratories need:
Frequent reconfiguration
Simplified inventory (no pre‑flanged tubing)
Greater versatility across systems
They offer a strong balance of performance, convenience, and cost efficiency in low‑pressure HPLC applications.
