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Bottle Septa

The applied septum is crucial for optimal analysis. Primarily, the septum should be inert to the sample solution and at the same time protect it from outside contamination as well as from possible evaporation. Almost all sealing discs are coated on one side with PTFE (Polytetrafluoroethylene), which has a high chemical resistance and forms an inert barrier between the sample and the carrier material of the septum. The carrier materials have different physical and chemical properties, e.g. temperature resistance, reclosing properties, purity, hardness, thickness, etc. We offer bottle septa with a diameter of 8mm to 22mm. Select the needed size in the drop down menu on the left. Choose from septa by Agilent Technologies and our home brand Altmann Analytik. These septa are a low cost and high quality alternative.

Items 1-50 of 270

Product Image of Septa, ND13, 12 mm diameter, natural rubber red-orange/TEF transp., 1,3mm, 10 x 100 pc
Septa, ND13, 12 mm diameter, natural rubber red-orange/TEF transp., 1,3mm, 10 x 100 pc
Item number: AAV23131334
Brand: Altmann Analytik

In stock

$95.94
Product Image of Septa, ND13, 12 mm diameter, PTFE, 0,25 mm, 10 x 100 pc
Septa, ND13, 12 mm diameter, PTFE, 0,25 mm, 10 x 100 pc
Item number: AAV23131279
Brand: Altmann Analytik

In stock

$33.60
Product Image of PTFE/silicone septa for 9 mm cap, EVA, 100 pc/PAK
PTFE/silicone septa for 9 mm cap, EVA, 100 pc/PAK
Item number: WN09-0030
Brand: DWK Wheaton

In stock

$29.29
Product Image of 13 mm Septa, Silicon white/PTFE red, 45° shore A, 1.3 mm, 1000 pc/PAK
13 mm Septa, Silicon white/PTFE red, 45° shore A, 1.3 mm, 1000 pc/PAK
Item number: AAV24132129
Brand: Altmann Analytik

In stock

$458.77
Product Image of Septum for Vials and caps, 144/PK
Septum for Vials and caps, 144/PK
Item number: WTWAT072714
Brand: Waters
$36.00
Product Image of Septa, PTFE 15mil for 20-400 cap, 100/pk
Septa, PTFE 15mil for 20-400 cap, 100/pk
Item number: WT186001422
Brand: Waters
$70.00
Product Image of Headspace Crimp Caps, 20 mm diameter, PTFE/Silicone Septa, 1000/PAK
Headspace Crimp Caps, 20 mm diameter, PTFE/Silicone Septa, 1000/PAK
Item number: PEB4000022
Brand: PerkinElmer
$940.00
Product Image of PTFE SEPTA, 10 GROSS PKG
PTFE SEPTA, 10 GROSS PKG
Item number: WTWAT073005
Brand: Waters
$68.00
Product Image of 9.5 mm Septum, NK/TEF red-orange, 55° shore A, 1.3 mm, 1000 pc/PAK
9.5 mm Septum, NK/TEF red-orange, 55° shore A, 1.3 mm, 1000 pc/PAK
Item number: AAV100496
Brand: Altmann Analytik
$137.04
Product Image of 9 mm Septum, natural rubber red-orange/TEF transparent, 60° shore A, 1 mm, 1000 pc/PAK
9 mm Septum, natural rubber red-orange/TEF transparent, 60° shore A, 1 mm, 1000 pc/PAK
Item number: AAV090077
Brand: Altmann Analytik
$122.64
Product Image of 8 mm Septum, natural rubber red-orange/TEF transparent, 55° shore A, 1 mm, 1000 pc/PAK
8 mm Septum, natural rubber red-orange/TEF transparent, 55° shore A, 1 mm, 1000 pc/PAK
Item number: AAV080072
Brand: Altmann Analytik
$66.72
Product Image of 30,3mm Septa, silicone creme/PTFE beige, 55°shore A, 3,2mm, for SCHOTT screw cap GL 32, 1000/pck
30,3mm Septa, silicone creme/PTFE beige, 55°shore A, 3,2mm, for SCHOTT screw cap GL 32, 1000/pck
Item number: AAV41131582
Brand: Altmann Analytik
$813.04
Product Image of Septa, 22 mm diameter, butyl red/PTFE grey, 55° shore A, 2,5mm, 10 x 100 pc
Septa, 22 mm diameter, butyl red/PTFE grey, 55° shore A, 2,5mm, 10 x 100 pc
Item number: AAV33132504
Brand: Altmann Analytik
$353.76
Product Image of Septa, 22 mm diameter, butyl red/PTFE grey, 55° shore A, 1,6mm, 10 x 100 pc
Septa, 22 mm diameter, butyl red/PTFE grey, 55° shore A, 1,6mm, 10 x 100 pc
Item number: AAV33132501
Brand: Altmann Analytik
$262.00
Product Image of Septa, 22 mm diameter, 3,2 mm, EPA-quality, 10 x 100 pc, silicone white/PTFE beige
Septa, 22 mm diameter, 3,2 mm, EPA-quality, 10 x 100 pc, silicone white/PTFE beige
Item number: AAV33132219
Brand: Altmann Analytik
$598.80
Product Image of Septa, 22 mm diameter, silicone white/aluminium foil silver, 50° shore A, 3.0mm, 10 x 100 pc
Septa, 22 mm diameter, silicone white/aluminium foil silver, 50° shore A, 3.0mm, 10 x 100 pc
Item number: AAV33131598
Brand: Altmann Analytik
$884.64
Product Image of Septa, 22 mm diameter, silicone white/PTFE blue, 55° shore A, 1.5mm, cross slit, 10 x 100 pc
Septa, 22 mm diameter, silicone white/PTFE blue, 55° shore A, 1.5mm, cross slit, 10 x 100 pc
Item number: AAV33131520
Brand: Altmann Analytik
$884.64
Product Image of Septa, 20 mm diameter, silicone blue transp./PTFE transp., 45° shore A, 3,0mm, 10 x 100 pc
Septa, 20 mm diameter, silicone blue transp./PTFE transp., 45° shore A, 3,0mm, 10 x 100 pc
Item number: AAV31133165
Brand: Altmann Analytik
$448.96
Product Image of Septa, 20 mm diameter, silicone white/PTFE beige, 45° shore A, 3,2mm, 10 x 100 pc
Septa, 20 mm diameter, silicone white/PTFE beige, 45° shore A, 3,2mm, 10 x 100 pc
Item number: AAV31131749
Brand: Altmann Analytik
$500.62
Product Image of Septa, 20 mm diameter, silicone white/aluminium foil silver, 50° shore A, 3,0mm, 10 x 100 pc
Septa, 20 mm diameter, silicone white/aluminium foil silver, 50° shore A, 3,0mm, 10 x 100 pc
Item number: AAV31131446
Brand: Altmann Analytik
$884.64
Product Image of septa, ND20, 3,0mm, Si blue transp./PTFE white, 10 x 100 pc
septa, ND20, 3,0mm, Si blue transp./PTFE white, 10 x 100 pc
Item number: AAV31131252
Brand: Altmann Analytik
$500.62
Product Image of Pharma-Fix-Septa, 20 mm diameter, butyl/PTFE, 50° shore A, 3,0mm, 10 x 100 pc
Pharma-Fix-Septa, 20 mm diameter, butyl/PTFE, 50° shore A, 3,0mm, 10 x 100 pc
Item number: AAV31131146
Brand: Altmann Analytik
$469.68
Product Image of Septa, 19 mm diameter, butyl red/PTFE grey, 55° shore A, 1,3mm, 10 x 100 pc
Septa, 19 mm diameter, butyl red/PTFE grey, 55° shore A, 1,3mm, 10 x 100 pc
Item number: AAV30132747
Brand: Altmann Analytik
$245.04
Product Image of Septa, 19 mm diameter, silicone blue transp./PTFE white, 1,3mm, 10 x 100 pc
Septa, 19 mm diameter, silicone blue transp./PTFE white, 1,3mm, 10 x 100 pc
Item number: AAV30131804
Brand: Altmann Analytik
$558.00
Product Image of Septa, 19 mm diameter, natural rubber red-orange/TEF transp., 60° shore A, 1,3mm, 10 x 100 pc
Septa, 19 mm diameter, natural rubber red-orange/TEF transp., 60° shore A, 1,3mm, 10 x 100 pc
Item number: AAV30131356
Brand: Altmann Analytik
$212.80
Product Image of Septa, 17 mm diameter, silicone white/aluminium foil, silver, 50°, 1,3mm, 10 x 100 pc
Septa, 17 mm diameter, silicone white/aluminium foil, silver, 50°, 1,3mm, 10 x 100 pc
Item number: AAV28132984
Brand: Altmann Analytik
$870.96
Product Image of Septa, 17 mm diameter, silicone white/PTFE red, 1,3mm, 10 x 100 pc
Septa, 17 mm diameter, silicone white/PTFE red, 1,3mm, 10 x 100 pc
Item number: AAV28132691
Brand: Altmann Analytik
$526.44
Product Image of Septa, 17 mm diameter, silicone blue transp./PTFE white, 1,3mm, 10 x 100 pc
Septa, 17 mm diameter, silicone blue transp./PTFE white, 1,3mm, 10 x 100 pc
Item number: AAV28132528
Brand: Altmann Analytik
$526.44
Product Image of Septa, 17 mm diameter, butyl red/PTFE grey, 1,6 mm, 10 x 100 pc
Septa, 17 mm diameter, butyl red/PTFE grey, 1,6 mm, 10 x 100 pc
Item number: AAV28132526
Brand: Altmann Analytik
$236.16
Product Image of Septa, 17 mm diameter, silicone white/PTFE blue, 1,5 mm, 10 x 100 pc
Septa, 17 mm diameter, silicone white/PTFE blue, 1,5 mm, 10 x 100 pc
Item number: AAV28132429
Brand: Altmann Analytik
$721.44
Product Image of Septa, 16 mm diameter, butyl red/PTFE grey, 55° shore A, 2,0mm, 10 x 100 pc
Septa, 16 mm diameter, butyl red/PTFE grey, 55° shore A, 2,0mm, 10 x 100 pc
Item number: AAV27132496
Brand: Altmann Analytik
$193.12
Product Image of Septa, 16 mm diameter, butyl red/PTFE grey, 55° shore A, 1,6mm, 10 x 100 pc
Septa, 16 mm diameter, butyl red/PTFE grey, 55° shore A, 1,6mm, 10 x 100 pc
Item number: AAV27132495
Brand: Altmann Analytik

In stock

$196.80
Product Image of Septa, 16 mm diameter, silicone blue transp./PTFE white, 1,7mm, 10 x 100 pc
Septa, 16 mm diameter, silicone blue transp./PTFE white, 1,7mm, 10 x 100 pc
Item number: AAV27131981
Brand: Altmann Analytik
$537.52
Product Image of Septa, ND13, 12 mm diameter, butyl red/PTFE grey, 1,3mm, 10 x 100 pc
Septa, ND13, 12 mm diameter, butyl red/PTFE grey, 1,3mm, 10 x 100 pc
Item number: AAV23132746
Brand: Altmann Analytik
$137.76
Product Image of Septa, ND13, 12 mm diameter, PTFE red/silicone white/PTFE red, 45° shore A, 1,0mm, 10 x 100 pc
Septa, ND13, 12 mm diameter, PTFE red/silicone white/PTFE red, 45° shore A, 1,0mm, 10 x 100 pc
Item number: AAV23131574
Brand: Altmann Analytik
$367.44
Product Image of Septa, ND13, 12 mm diameter, silicone white/PTFE blue, 55° shore A, 1,5mm, cross slit, 10 x 100 pc
Septa, ND13, 12 mm diameter, silicone white/PTFE blue, 55° shore A, 1,5mm, cross slit, 10 x 100 pc
Item number: AAV23131433
Brand: Altmann Analytik
$476.40
Product Image of Septa, ND13, 12 mm diameter, silicone creme/PTFE red, 1,5mm, 10 x 100 pc
Septa, ND13, 12 mm diameter, silicone creme/PTFE red, 1,5mm, 10 x 100 pc
Item number: AAV23131254
Brand: Altmann Analytik
$285.84
Product Image of Septa, 11 mm diameter, red rubber/PTFE beige, 1,0 mm, 1000/pck, approved IM Qualtiy
Septa, 11 mm diameter, red rubber/PTFE beige, 1,0 mm, 1000/pck, approved IM Qualtiy
Item number: AAV22132987
Brand: Altmann Analytik
$141.12
Product Image of Septa, 11 mm diameter, 1,5mm, silicone white/PTFE blue, cross slit, 1000/pck, cross slitted
Septa, 11 mm diameter, 1,5mm, silicone white/PTFE blue, cross slit, 1000/pck, cross slitted
Item number: AAV22131557
Brand: Altmann Analytik
$476.40
Product Image of Septa, 11 mm diameter, Viton 1A black, 1,5 mm 1000/pck
Septa, 11 mm diameter, Viton 1A black, 1,5 mm 1000/pck
Item number: AAV22131332
Brand: Altmann Analytik
$476.40
Product Image of Septa, 11 mm diameter, PTFE, 53° shore D, 0,25mm, 10 x 100 pc
Septa, 11 mm diameter, PTFE, 53° shore D, 0,25mm, 10 x 100 pc
Item number: AAV22131287
Brand: Altmann Analytik
$47.76
Product Image of Septa, 11 mm diameter, silicone creme/PTFE red, 55° shore A, 1,5mm, 10 x 100 pc
Septa, 11 mm diameter, silicone creme/PTFE red, 55° shore A, 1,5mm, 10 x 100 pc
Item number: AAV22131251
Brand: Altmann Analytik
$258.72
Product Image of Septa, 11 mm diameter, PTFE red/silicone white/PTFE red, 45° shore A, 1,0 mm, 10 x 100 pc
Septa, 11 mm diameter, PTFE red/silicone white/PTFE red, 45° shore A, 1,0 mm, 10 x 100 pc
Item number: AAV22131226
Brand: Altmann Analytik
$340.32
Product Image of Septa, 10 mm diameter, PTFE virginal, 0,25mm 1000/pck
Septa, 10 mm diameter, PTFE virginal, 0,25mm 1000/pck
Item number: AAV21131757
Brand: Altmann Analytik
$47.76
Product Image of Septa for short thread screw cap, ND9, silicone white/PTFE blue, 1000/pck, silicone white/PTFE blue, with slit
Septa for short thread screw cap, ND9, silicone white/PTFE blue, 1000/pck, silicone white/PTFE blue, with slit
Item number: AAV20133053
Brand: Altmann Analytik
$316.12
Product Image of Septa for short thread screw cap, ND9, red rubber/PTFE beige, 1000/pck, RedRubber/PTFE beige, approved IM Quality, 1,0mm
Septa for short thread screw cap, ND9, red rubber/PTFE beige, 1000/pck, RedRubber/PTFE beige, approved IM Quality, 1,0mm
Item number: AAV20132929
Brand: Altmann Analytik
$111.94
Product Image of Septa for short thread screw cap, ND9, PTFE red/silicone white/PTFE red, 1mm, 1000/pck
Septa for short thread screw cap, ND9, PTFE red/silicone white/PTFE red, 1mm, 1000/pck
Item number: AAV20132892
Brand: Altmann Analytik
$260.76
Product Image of Septa for short thread screw cap, ND9, silicone white/PTFE red, 1000/pck, UltraCrossLabean, 1,0mm
Septa for short thread screw cap, ND9, silicone white/PTFE red, 1000/pck, UltraCrossLabean, 1,0mm
Item number: AAV20132891
Brand: Altmann Analytik
$184.50
Product Image of Septa, 10 mm diameter, PTFE red/silicone white/PTFE red, 1,0 mm, 1000/pck
Septa, 10 mm diameter, PTFE red/silicone white/PTFE red, 1,0 mm, 1000/pck
Item number: AAV20132372
Brand: Altmann Analytik
$340.32
Product Image of Septa, 10 mm diameter, silicone white/PTFE red, 1,3 mm, 1000/pck
Septa, 10 mm diameter, silicone white/PTFE red, 1,3 mm, 1000/pck
Item number: AAV20132371
Brand: Altmann Analytik
$233.70

Items 1-50 of 270

Properties and applications of septa made of TEF, PTFE, butyl, silicone etc.

Naturkautschuk /TEF
  Application: HPLC/GC

• Standard quality for HPLC
• Good reclosure properties for multiple injections
• Relatively inexpensive
• Temperature resistant from -40 ° C to 120 ° C
• Not very clean as a natural product
• Punching discs (punched from sheet / roll material
RedRubber / PTFE (synthetic rubber)
  Application: HPLC/GC

• NEW standard quality for HPLC and GC
• Synthetic rubber, cleaner and softer than natural rubber
• Relatively inexpensive
• Temperature resistant from -40 ° C to 110 ° C
• Punching discs (punched from sheet / roll material)
Butyl (septa / stopper)
  Application: Headspace

• In the absence of a PTFE coating, only for uncritical analyzes
• Butyl as a synthetic rubber cleaner than natural rubber
• Very cheap as there is no PTFE coating
• Application examples: breweries, blood alcohol analyzes
• Original Butyl stopper for PerkinElmer
• Forming discs (vulcanized and formed in a mold)

    
Pharma-Fix Septum Butyl / PTFE
  Application: GC/HPLC/Headspace

• Specialty: Pharma-Fix washer only centric PTFE-coated butyl disc; The elastic butyl lying on the glass edge achieves a significantly better seal than the slippery surface of a completely laminated sealing disc
• Butyl as a synthetic rubber cleaner than natural rubber
• Relatively inexpensive compared to silicone
• Temperature resistant from -40 ° C to 120 ° C
• Synthetic rubber has poorer reclosure properties than natural rubber
• Forming discs (vulcanized and formed in a mold)
(PTFE /) silicone / PTFE
  Application: GC/HPLC/Headspace

• Silicone is the purest synthetic elastomer and is therefore used for critical analyzes
• Temperature resistant from -60 ° C to 200 ° C
• Improved reclosure properties than NK / TEF as a synthetic elastomer
• (segmented) septa in HPLC as penetration aids for thick / blunt needles and for producing a valve effect in the case of multiple injections
• Specialty: PTFE-coated silicone washers on both sides for low particle formation
• punching discs (punched from sheet / roll material)
Silicon / aluminum foil
  Application: Headspace

• All chemical and physical properties, such as silicone / PTFE
• However, slightly higher temperature resistance from -60 ° C to 220 ° C
• Frequently on PerkinElmer devices
• More expensive than PTFE-coated septa
Pure PTFE septa
  Application: HPLC

• Very inert, therefore also as a coating on most other sealing discs
• No elastomer
-> No sealing
-> No reclosing properties
• Do not press-fit into caps; Are therefore often only sold unassembled
• Very cheap
• Only for very uncritical applications
• Are often used on VWR (Merck) / Hitachi and Waters instruments

Durometer (hardness of the septum)


Durometer is the hardness of a septum, expressed in ° shore. The higher the "shore" number, the harder the septum, the lower the "shore" number, the softer the septum. The softest sealing disc is 45 ° shore A and the hardest 70 ° shore A is hard. In addition to the thickness of the disc, the hardness is an important indicator, which septum is suitable for the penetration of a certain needles (sensitive needles, thin or thick needles, pointed or blunt needles, etc.).