Caps & septa

Caps & septa are the closures that seal chromatography vials before they go into an HPLC or GC autosampler. Analytical chemists in pharmaceutical, environmental and contract testing laboratories choose them to match the vial neck and the solvent being injected.

All 211 listings in this section are Macherey-Nagel. The range includes N 8 aluminium crimp caps with a centre hole and red rubber/FEP septa, and N 9 polypropylene screw caps with bonded septa in silicone/PTFE or red rubber/TEF, in plain and slit versions. Septum hardness and thickness are given on each listing, with 1.0 mm and 1.3 mm options and hardness from 45 to 65 Shore A, supplied in packs of 100.

To choose, start with the vial neck size, then pick a crimp or screw closure to suit your crimping tools and workflow. Consider the septum material against the solvent in use, and choose a slit septum where repeated needle penetration is expected in automated runs. Lancetech Limited can quote vial caps and septa on request.

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49 productsN 20 ×

Caps & septa

Recommended Application

Septa thickness

Septa hardness

Septa material

Scope of delivery

Closure type

N 20 septa Butyl light gray/PTFE dark gray Hardness: 50° shore A Thickness: 3 mm pack of 100

N 20 Aluminium pressure release safety cap, silver, center hole Butyl dark gray/centrical PTFE-lamination gray Hardness: 50° shore A Thickness: 3 mm pack of 100

N 20 Aluminium crimp cap, silver, center hole Silicone blue transparent/PTFE colorless Hardness: 45° shore A Thickness: 3 mm pack of 100

N 20 Aluminium crimp cap, silver, center hole Silicone white / PTFE beige Hardness: 45° shore A Thickness: 3 mm pack of 100

N 20 septa Moulded Septa Butyl/PTFE gray Hardness: 50° shore A Thickness: 3 mm pack of 100

N 20 Aluminium crimp cap, gold, center hole pack of 100

N 20 PP screw cap (bonded, 20-400), white, closed top Silicone white/PTFE blue Hardness: 55° shore A Thickness: 1.3 mm pack of 100

N 20 PE Cap for crimp neck vials with beveled top N 20 transparent, center hole Natural Rubber red-orange/TEF colorless Hardness: 45° shore A Thickness: 1.3 mm pack of 100

N 20 PE Cap for crimp neck vials with flat DIN crimp neck N 20 transparent, center hole Natural Rubber red-orange/TEF colorless Hardness: 45° shore A Thickness: 1.3 mm pack of 100

N 20 Aluminium crimp cap, silver, center hole Silicone white / FEP-/Aluminium foil silver Hardness: 45° shore A Thickness: 3.2 mm pack of 100

N 20 screw cap (bonded, 20-400), white, center hole Silicone white/PTFE beige Hardness: 45° shore A Thickness: 1.5 mm pack of 100

N 20 Aluminium Center Tear Off Cap, gold Butyl dark gray/centrical PTFE-lamination gray Hardness: 50° shore A Thickness: 3 mm pack of 100

N 20 Aluminium crimp cap, silver, center hole Butyl dark gray/centrical PTFE-lamination gray Hardness: 50° shore A Thickness: 3 mm pack of 100

N 20 Aluminium crimp cap, silver, center hole Butyl dark gray/centrical PTFE-lamination gray high purity Hardness: 50° shore A Thickness: 3 mm pack of 100

N 20 Aluminium pressure release safety cap, silver, center hole Moulded Septa Butyl/PTFE gray Hardness: 50° shore A Thickness: 3 mm pack of 100

N 20 Aluminium crimp cap, silver, center hole Moulded Septa Butyl/PTFE gray Hardness: 50° shore A Thickness: 3 mm pack of 100

N 20 Aluminium crimp cap, silver, center hole Silicone blue transparent/centrical PTFE-lamination colorless Hardness: 45° shore A Thickness: 3 mm pack of 100

N 20 bimetal crimp cap, blue/silver, center hole Silicone blue transparent/centrical PTFE-lamination colorless Hardness: 45° shore A Thickness: 3 mm pack of 100

N 20 Aluminium Complete Tear Off Cap, silver Butyl dark gray/centrical PTFE-lamination gray Hardness: 50° shore A Thickness: 3 mm pack of 100

N 20 Aluminium Center Tear Off Cap, silver pack of 100

N 20 Aluminium crimp cap, silver, center hole Bromobutyl stopper, gray Hardness: 50° shore A (unassembled) pack of 100

N 20 PE Cap for crimp neck vials with flat DIN crimp neck N 20 transparent, center hole Butyl beige/PTFE gray Hardness: 55° shore A Thickness: 1.3 mm (unassembled) pack of 100

N 20 bimetal crimp cap, blue/silver, center hole Silicone white/Polyimide orange Hardness: 45° shore A Thickness: 3 mm pack of 100

N 20 PE Cap for crimp neck vials with beveled top N 20 transparent, center hole Butyl beige/PTFE gray Hardness: 55° shore A Thickness: 1.3 mm (unassembled) pack of 100

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