Round tube connector Nexlock

stainless steelscrew-in

Overview
Nexlock is a reusable finger-tight fitting designed for easy handling and high pressure capacity. The fitting and tube combination provides reliable sealing to achieve a zero dead volume connection, minimizing peak broadening and tailing in chromatographic systems. It withstands pressures up to 130 MPa without tools.

Key benefits

• Zero dead volume connection
• Single-part fitting concept
• Reliable sealing and repeatability

Features

• Minimized dispersion: Nexlock ensures a zero dead volume connection every time, improving peak shape compared with conventional connectors where port depth varies.
• Reusable up to 100 times: Tubing can be connected and disconnected up to 100 cycles for maintenance and replacement.
• Compatible with UHPLC: Rated for working pressures up to ~19,000 psi (130 MPa).

Product Specification
Pressure capacity: 130 MPa (~19,000 psi)
Fitting: Screw: No. 10-32 UNF; Material: SUS316L (removable from tube)
Wetted materials: Tube inner surface: SUS316L; Tip: PEEK

Ordering Information
Description — P/N — Tube Length (mm) — I.D. (µm) — Remarks
Tubing and fitting set — 228-62544-14 — 200 — 100 —
228-62544-12 — 300 — 100 —
228-62544-11 — 600 — 100 —
228-62544-13 — 800 — 100 —
228-52597-48 — with preheat block for CTO-30A — 800 — 100
Tube only (for maintenance) — 228-62544-64 — 200 — —
228-62544-62 — 300 — —
228-62544-61 — 600 — —
228-62544-63 — 800 — —
228-52597-49 — 800 — with preheat block for CTO-30A
Fitting only (for maintenance) — 228-62544-90 — — — can be used with all Nexlock tubing

Technical specifications

• Pressure capacity: 130 MPa (~19,000 psi)
• Reusable: up to 100 connect/disconnect cycles for tubing
• Fitting screw: No. 10-32 UNF
• Fitting material: SUS316L (removable from tube)
• Wetted materials: Tube inner surface SUS316L; Tip PEEK
• Zero dead volume connection to minimize peak broadening and tailing
• Compatible with UHPLC (working pressures up to ~19,000 psi)
• Designed for high pressure capacity and maintenance-friendly reuse