Three-piece coupling comprising coupling, locknut made of PP and clamping ring made of FEP. Corrugated hose coupling to connect hard-walled corrugated hoses to the b.safe Waste Cap HPLC screw cap via the NPT ¹/₈″ threaded connection. Locknut with ergonomic gripping surfaces, additional recessed grips with SW10 at the coupling. Temperature stable: 0 to +110 °C.Select the b.safe corrugated hose coupling suitable for the hoses of your HPLC. Corrugated hoses with 6.5 mm internal Ø, for example, are included with devices from Agilent Technologies; corrugated hoses with 8.5 mm internal Ø, for example, with devices from Thermo Scientific.