GC Septa

As an essential element of any GC system, we carry a wide selection of high quality septa for your laboratory applications. We offer Septa by Agilent Technologies, Thermo Fisher, SGE and other leading manufacturers. High-quality and affordable alternatives are available in the form of our own brand Altmann Analytik. Click here for GC Ferrules.

Questions about our products? Our expert team will advise you on all questions.

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Product Image of SHIMADZU Plug GC septa (ultra pure), red, 25 pc/PAK
SHIMADZU Plug GC septa (ultra pure), red, 25 pc/PAK
Item number: AAV070186
Brand: Altmann Analytik
€44.00
Product Image of 9.5 mm high performance GC septum (ultra pure), red, 25 pc/PAK
9.5 mm high performance GC septum (ultra pure), red, 25 pc/PAK
Item number: AAV090182
Brand: Altmann Analytik
€1.70
Product Image of 17 mm High performance GC Septum (Ultra pure), red, 25 pc/PAK
17 mm High performance GC Septum (Ultra pure), red, 25 pc/PAK
Item number: AAV170185
Brand: Altmann Analytik
€215.56
Product Image of 11 mm high performance GC septum (ultra pure), red, 25 pc/PAK
11 mm high performance GC septum (ultra pure), red, 25 pc/PAK
Item number: AAV110184
Brand: Altmann Analytik
€1.70
Product Image of 12mm Septum, RedRubber/PTFE beige, 45° shore A, 1.3mm
12mm Septum, RedRubber/PTFE beige, 45° shore A, 1.3mm
Item number: AAV23133210
Brand: Altmann Analytik
€281.88
Product Image of GC Septa, 212°C, PTFE/Silicone Rubber, ø 11 mm, 3.18 mm thick, 12 pc/PAK
GC Septa, 212°C, PTFE/Silicone Rubber, ø 11 mm, 3.18 mm thick, 12 pc/PAK
Item number: HT75807
Brand: Hamilton

In stock

€30.71 €32.33
Product Image of Septa PTFE/Silicone 8mm Pre, 100pc/PAK
Septa PTFE/Silicone 8mm Pre, 100pc/PAK
Item number: WTWAT058876
Brand: Waters

In stock

€36.00
Product Image of Septa PTFE/Silicone, 100pc/PAK
Septa PTFE/Silicone, 100pc/PAK
Item number: WTWAT058874
Brand: Waters

In stock

€30.00
Product Image of High Temperature GC Septum, 9,5 mm diameter, 25/pk
High Temperature GC Septum, 9,5 mm diameter, 25/pk
Item number: TFHT-9.5
Brand: Thermo Fisher Scientific

In stock

€69.27 €76.97
Product Image of High Temperature GC Septum, 11 mm diameter, 25/pk
High Temperature GC Septum, 11 mm diameter, 25/pk
Item number: TFHT-11
Brand: Thermo Fisher Scientific

In stock

€69.27 €76.97
Product Image of Economy GC Septum, 11 mm diameter, 25/pk
Economy GC Septum, 11 mm diameter, 25/pk
Item number: TFECO-11
Brand: Thermo Fisher Scientific

In stock

€33.88 €37.64
Product Image of Septum, BTO, 9 mm diameter, 50/PAK
Septum, BTO, 9 mm diameter, 50/PAK
Item number: TF31303240
Brand: Thermo Fisher Scientific

In stock

€114.30
Product Image of Advance Green-septa n.kleb. 11 mm diameter, 400pc/PAK
Advance Green-septa n.kleb. 11 mm diameter, 400pc/PAK
Item number: AG5190-3158
Brand: Agilent Technologies

In stock

€722.00
Product Image of Bto Inlet -Septa n. klebend 11 mm diameter, 400 pc/PAK
Bto Inlet -Septa n. klebend 11 mm diameter, 400 pc/PAK
Item number: AG5190-3157
Brand: Agilent Technologies

In stock

€749.00
Product Image of Non-Stick Advanced Green Inlet Septa 11mm inlet septa, 50pc/PAK
Non-Stick Advanced Green Inlet Septa 11mm inlet septa, 50pc/PAK
Item number: AG5183-4759
Brand: Agilent Technologies

In stock

€103.00
Product Image of Non-Stick BTO Inlet septa 11 mm diameter, 100pc/PAK, for 5880, 5890, 4890, 6850, 6890, 7890 GCs
Non-Stick BTO Inlet septa 11 mm diameter, 100pc/PAK, for 5880, 5890, 4890, 6850, 6890, 7890 GCs
Item number: AG5183-4757-100
Brand: Agilent Technologies

In stock

€206.00
Product Image of Septa for screw top caps, certified, PTFE/red silicone, 9mm,  100 pc/PAK
Septa for screw top caps, certified, PTFE/red silicone, 9mm, 100 pc/PAK
Item number: AG5182-0731
Brand: Agilent Technologies

In stock

€19.00
Product Image of Shimadzu long life Septum, 25/PAK
Shimadzu long life Septum, 25/PAK
Item number: TFLL-SP
Brand: Thermo Fisher Scientific

In stock

€47.56 €52.84
Product Image of GC-Septa, 9 mm OD, Marathon low-bleed center guide, 25 pc/PAK
GC-Septa, 9 mm OD, Marathon low-bleed center guide, 25 pc/PAK
Item number: CR239778
Brand: Chromatography Research Supplies
€62.90
Product Image of GC-Septa, 5 mm OD, Marathon low-bleed center guide, 25 pc/PAK
GC-Septa, 5 mm OD, Marathon low-bleed center guide, 25 pc/PAK
Item number: CR239587
Brand: Chromatography Research Supplies
€62.90
Product Image of GC-Septa, Shimadzu Plug Economy, blue, 100 pc/PAK
GC-Septa, Shimadzu Plug Economy, blue, 100 pc/PAK
Item number: CR234120
Brand: Chromatography Research Supplies
€280.40
Product Image of GC-Septa, 9.5 mm (3/8'') Economy, blue, 100 pc/PAK
GC-Septa, 9.5 mm (3/8'') Economy, blue, 100 pc/PAK
Item number: CR234905
Brand: Chromatography Research Supplies
€77.70
Product Image of GC-Septa, 9 mm OD, Economy, blue, 100 pc/PAK
GC-Septa, 9 mm OD, Economy, blue, 100 pc/PAK
Item number: CR234109
Brand: Chromatography Research Supplies
€77.70
Product Image of GC-Septa, 6.4 mm (1/4'') Economy, blue, 100 pc/PAK
GC-Septa, 6.4 mm (1/4'') Economy, blue, 100 pc/PAK
Item number: CR234625
Brand: Chromatography Research Supplies
€77.70
Product Image of GC-Septa, 5 mm OD, Economy, blue, 100 pc/PAK
GC-Septa, 5 mm OD, Economy, blue, 100 pc/PAK
Item number: CR234105
Brand: Chromatography Research Supplies
€77.70
Product Image of GC-Septa, 17 mm Economy, blue, 100 pc/PAK
GC-Septa, 17 mm Economy, blue, 100 pc/PAK
Item number: CR234117
Brand: Chromatography Research Supplies
€96.50
Product Image of GC-Septa, 12.7 mm Economy, blue, 100 pc/PAK
GC-Septa, 12.7 mm Economy, blue, 100 pc/PAK
Item number: CR234125
Brand: Chromatography Research Supplies
€77.70
Product Image of GC-Septa, 11.5 mm Economy, blue, 100 pc/PAK
GC-Septa, 11.5 mm Economy, blue, 100 pc/PAK
Item number: CR234215
Brand: Chromatography Research Supplies
€77.70
Product Image of GC-Septa, 11 mm Economy, blue, 100 pc/PAK
GC-Septa, 11 mm Economy, blue, 100 pc/PAK
Item number: CR234115
Brand: Chromatography Research Supplies
€77.70
Product Image of GC-Septa, 10 mm OD, Economy, blue, 100 pc/PAK
GC-Septa, 10 mm OD, Economy, blue, 100 pc/PAK
Item number: CR234110
Brand: Chromatography Research Supplies
€77.70
Product Image of GC-Septa, Longlife, for Shiamdzu, 20 pc/PAK
GC-Septa, Longlife, for Shiamdzu, 20 pc/PAK
Item number: TFLL-SP-20
Brand: Thermo Fisher Scientific
€48.33
Product Image of SureSTART 20 mm Septa, Level 2, white Silicone/beige PTFE, 3 mm, 1000 pc/PAK
SureSTART 20 mm Septa, Level 2, white Silicone/beige PTFE, 3 mm, 1000 pc/PAK
Item number: TF6A20ST1T
Brand: Thermo Fisher Scientific
€634.89
Product Image of SureSTART 20 mm Septa, Level 2, white Silicone/beige PTFE, 3 mm, 5000 pc/PAK
SureSTART 20 mm Septa, Level 2, white Silicone/beige PTFE, 3 mm, 5000 pc/PAK
Item number: TF6A20ST1F
Brand: Thermo Fisher Scientific
€3,015.73
Product Image of Septum N20 But dgr/zt. PTFEgr, 50° 3,0
Septum N20 But dgr/zt. PTFEgr, 50° 3,0
Item number: MN702D20TB
Brand: Macherey-Nagel
€46.00
Product Image of Septum N17 Sil bltr/PTFE w, 45°, 1,5
Septum N17 Sil bltr/PTFE w, 45°, 1,5
Item number: MN702981
Brand: Macherey-Nagel
€52.00
Product Image of Septum N19 NK or/TEF, 45°, 1,3
Septum N19 NK or/TEF, 45°, 1,3
Item number: MN702904
Brand: Macherey-Nagel
€24.50
Product Image of Septum N22 But r/PTFE gr, 50°, 2,4
Septum N22 But r/PTFE gr, 50°, 2,4
Item number: MN702791
Brand: Macherey-Nagel
€34.90
Product Image of Septum N20 Sil bltr/PTFE, 40°, 3,0
Septum N20 Sil bltr/PTFE, 40°, 3,0
Item number: MN702780
Brand: Macherey-Nagel
€47.00
Product Image of Septum N20 Sil w/PTFE bg, 45°, 3,0
Septum N20 Sil w/PTFE bg, 45°, 3,0
Item number: MN70278
Brand: Macherey-Nagel
€45.00
Product Image of Septum N20 But r/PTFE gr, 50°, 3,0
Septum N20 But r/PTFE gr, 50°, 3,0
Item number: MN70277
Brand: Macherey-Nagel
€26.10
Product Image of Septum N19 Bu bg/PTFEgr, 55°, 1,3
Septum N19 Bu bg/PTFEgr, 55°, 1,3
Item number: MN70269
Brand: Macherey-Nagel
€27.50
Product Image of Septum N8 PTFE w, 53°, 0,25
Septum N8 PTFE w, 53°, 0,25
Item number: MN70261
Brand: Macherey-Nagel
€3.80
Product Image of Septum N12 PTFE w, 53°, 0,25
Septum N12 PTFE w, 53°, 0,25
Item number: MN70260
Brand: Macherey-Nagel
€4.90
Product Image of Septum N8 Sil w/PTFE bl (-) 40°, 1,0
Septum N8 Sil w/PTFE bl (-) 40°, 1,0
Item number: MN702481
Brand: Macherey-Nagel
€26.00
Product Image of Septum N8 Sil w/PTFE r, 40°, 1,3
Septum N8 Sil w/PTFE r, 40°, 1,3
Item number: MN70248
Brand: Macherey-Nagel
€19.80
Product Image of Septum N12 Sil w/FEP r, 40°, 1,3
Septum N12 Sil w/FEP r, 40°, 1,3
Item number: MN702292
Brand: Macherey-Nagel
€27.50
Product Image of Septum N9 Sil w/PTFE bl (-), 40°, 1,0
Septum N9 Sil w/PTFE bl (-), 40°, 1,0
Item number: MN702148
Brand: Macherey-Nagel
€26.90
Product Image of Septum N19 Sil bltr/PTFE w, 45°, 1,3
Septum N19 Sil bltr/PTFE w, 45°, 1,3
Item number: MN702144
Brand: Macherey-Nagel
€41.50
Product Image of Septum N17 Sil w/PTFE bl, 55°, 1,5
Septum N17 Sil w/PTFE bl, 55°, 1,5
Item number: MN702110
Brand: Macherey-Nagel
€58.00
Product Image of Septum N20 Fs. But/PTFE gr, 50°, 3,0
Septum N20 Fs. But/PTFE gr, 50°, 3,0
Item number: MN702101
Brand: Macherey-Nagel
€32.00

Septa must withstand high chemical and mechanical loads during everyday use in analytics. Especially the application in combination with GC systems requires a high thermal load capacity of the material. A selection of the most common GC septa can be found below.

Material Max. operating temperature Features
BTO 400 °C (300 °C for 17 mm septa)

Low bleeding

Optimized for GC/MS systems

TR-Green 350 °C Long lifetime
Marathon 350 °C

High mechanical resistance

Up to 400 injections per septa lifetime

TR-Blue 200 – 250 °C

Easy to penetrate

Suitable for routine applications

The Inlet septa is an essential part of the sample introduction into a GC system. The purpose of the septa is to create a barrier which is penetrated readily from the nozzle needle and is maintained while the internal pressure is held up without contaminating the analysis.

Septa are available in a number of different materials and sizes (according to the specifications of the system). They are generally made from compositions made of silicone rubber with low bleed and high temperature limit. Therefore Septa are recommended in high/upper temperature limits. Materials for lower temperatures are generally softer, seal better and resist a greater number of injections as higher temperature material. If septa are used above the recommended temperature limit, it may leak into the inlet or decompose. This can lead to sample loss since the hermetic seal is lost, that results in lower column flow and a reduction in the life of the column.

To avoid greater damage and contamination in the entire GC system, the septa should be changed regularly. Thus leaks can be prevented or sample loss reduced in the system. By replacing the septa at reasonable intervals of decomposition of the septa in the system aperture can be counteracted and thus extend the life of the column.

If you can't find a suitable product for your applications, do not hesitate to contact us. Our expert team will advise you independently.