Septa

Septa are available in a variety of materials and thicknesses. PTFE Natural Rubber are moderately priced seals for GC and HPLC with good chemical properties. They are ideal for multiple injections due to high resealability, but not as easy to penetrate as PTFE/RR. PTFE/High Performance Rubber is a highly pure synthetic red rubber septum that provides a reduced background level for specific GC applications, employing sensitive detectors such as ECD or NPD. PTFE/Silicone Septa (T/S) has high-quality, low background/blank value, 100% synthetic pure silicone septa.

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GC septa, Thermogreen® LB-2

Supplier: Merck

Ready to use GC septa for inlet temperature of up to 100 to 350 °C.

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GC septa, Thermogreen® LB-1

Supplier: Merck

These septa are suitable for use with 50 to 300 °C inlet temperatures.

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VWR® Septa/stoppers 20 mm for SPME Crimp Neck Vial ND20

Supplier: LA PHA PACK

VWR®, Septa, Butyl injection stopper, grey

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Septa for 16 mm screw top vials

Supplier: Agilent

Septa, PTFE/silicone, pre-slit

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VWR® Septa 12 mm for Screw Neck Vials ND13

Supplier: LA PHA PACK

VWR®, Septa, PTFE virginal, Hardness: 53° shore D, Thickness: 0,25 mm

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Septa for screw top autosampler vials

Supplier: Merck

Septa, Septa, for use with 7 ml vial, Blue PTFE/white silicone, Thickness: 1,52 mm, Ø: 13 mm

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Septa for screw top vials

Supplier: Merck

Septa, White tan PTFE/silicone, Thickness: 2,3 mm, Ø: 16 mm

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GC septa

Supplier: PerkinElmer

Septa, Silicone septa without cap

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Septa for 20 mm certified headspace crimp top vials

Supplier: Agilent

Septa, Silicone, tan PTFE/white silicone

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Septa for 13-425 screw thread caps

Supplier: THERMO NATIONAL SCIENTIFIC

These septa are suitable for use with 13-425 threaded caps or 13 mm snap/crimp caps.

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Septa for 13 mm screw top vials, CrossLab

Supplier: Agilent

CrossLab, Septa, Red PTFE/white silicone

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Septa for 22 mm screw top vials

Supplier: Agilent

Septa, Septa, PTFE/silicone, For: 10 ml vials

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Inlet septa

Supplier: Agilent

These septa are available for a variety of applications and have different upper temperature limits. The lower temperature septa are usually softer, seal better and can withstand more punctures (injections) than their high temperature counterparts.