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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.

For more Information about bottle septa, please click here.

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Bottle Septa

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  1. Septa red PTFE/White Sil., 12 mm diameter, 100 pc/PAK, n/White Silicone septa, 0.075, 12mm for 4ml screw
    Agilent Technologies

    Septa red PTFE/White Sil., 12 mm diameter, 100 pc/PAK

    $23.95
    sku: AG5183-4460
  2. Septum for Vials and caps, 144/PK
    Waters

    Septum for Vials and caps, 144/PK

    $7.00
    sku: WTWAT072714
  3. Septa, ND13, 12 mm diameter, silicone creme/PTFE red, 1,5mm, 10 x 100 pc
    Altmann Analytik

    Septa, ND13, 12 mm diameter, silicone creme/PTFE red, 1,5mm, 10 x 100 pc

    $327.28
    sku: AAV23131254
  4. PK100 PTFE/SILICONE SEPTA FOR 22ML VIAL
    Supelco

    PK100 PTFE/SILICONE SEPTA FOR 22ML VIAL

    $150.80
    sku: SU27177
  5. Septa, ND8, 8 mm diameter, PTFE, 53° shore D, 0,25 mm, 1000/pck
    Altmann Analytik

    Septa, ND8, 8 mm diameter, PTFE, 53° shore D, 0,25 mm, 1000/pck

    $32.34
    sku: AAV19131288
  6. Septa, ND13, 12 mm diameter, PTFE, 0,25 mm, 10 x 100 pc
    Altmann Analytik

    Septa, ND13, 12 mm diameter, PTFE, 0,25 mm, 10 x 100 pc

    $32.58
    sku: AAV23131279
  7. Septa, ND13, 12 mm diameter, natural rubber red-orange/TEF transp., 1,3mm, 10 x 100 pc
    Altmann Analytik

    Septa, ND13, 12 mm diameter, natural rubber red-orange/TEF transp., 1,3mm, 10 x 100 pc

    $83.12
    sku: AAV23131334
  8. Septa, PTFE 15mil for 20-400 cap, 100/pk
    Waters

    Septa, PTFE 15mil for 20-400 cap, 100/pk

    $10.00
    sku: WT186001422
  9. N17 Septa Butyl red/PTFE grey, 50° shore A, 1.5mm, 100pc/PAK
    Macherey-Nagel

    N17 Septa Butyl red/PTFE grey, 50° shore A, 1.5mm, 100pc/PAK

    $26.40
    sku: MN702138
  10. Univ. HT Inject. Port septa, 10 mm diameter, transp., 25/PAK
    Altmann Analytik

    Univ. HT Inject. Port septa, 10 mm diameter, transp., 25/PAK

    $48.35
    sku: AAV21292048
  11. Septa, 10 mm diameter, natural rubber red-orange/TEF transparent, 1.3mm, 1000/pck
    Altmann Analytik

    Septa, 10 mm diameter, natural rubber red-orange/TEF transparent, 1000/pck

    $133.27
    sku: AAV20132370
  12. Septa, 10 mm diameter, silicone white/PTFE red, 1,3 mm, 1000/pck
    Altmann Analytik

    Septa, 10 mm diameter, silicone white/PTFE red, 1,3 mm, 1000/pck

    $271.90
    sku: AAV20132371
  13. Septa for short thread screw cap, ND9, silicone white/PTFE red, 1000/pck, UltraCrossLabean, 1,0mm
    Altmann Analytik

    Septa for short thread screw cap, ND9, silicone white/PTFE red, 1000/pck

    $260.83
    sku: AAV20132891
  14. Septa for short thread screw cap, ND9, red rubber/PTFE beige, 1000/pck, RedRubber/PTFE beige, approved IM Quality, 1,0mm
    Altmann Analytik

    Septa for short thread screw cap, ND9, red rubber/PTFE beige, 1000/pck

    $144.10
    sku: AAV20132929
  15. septa, 22 mm diameter, 1,3mm, 10 x 100 pc, Nat.rubber red-orange/TEF transp.
    Altmann Analytik

    septa, 22 mm diameter, 1,3mm, 10 x 100 pc

    $249.37
    sku: AAV33131653
  16. Septa, ND8, 8 mm diameter, silicone white/PTFE red, 45° shore A, 1,3 mm, 1000/pck
    Altmann Analytik

    Septa, ND8, 8 mm diameter, silicone white/PTFE red, 45° shore A, 1,3 mm, 1000/pck

    $236.89
    sku: AAV19131214
  17. Septa, ND8, 8 mm diameter, natural rubber red-orange/TEF transp., 60° shore A, 1,0 mm, 1000/pck
    Altmann Analytik

    Septa, ND8, 8 mm diameter, natural rubber red-orange/TEF transp., 60° shore A, 1,0 mm, 1000/pck

    $64.67
    sku: AAV19131343
  18. Septa, 8 mm diameter, red rubber/PTFE beige, 45° shore A, 1,0 mm, 10x100/pck
    Altmann Analytik

    Septa, 8 mm diameter, red rubber/PTFE beige, 45° shore A, 1,0 mm, 10x100/pck

    $93.68
    sku: AAV19133077
  19. Septa, 16 mm diameter, butyl red/PTFE grey, 55° shore A, 1,6mm, 10 x 100 pc
    Altmann Analytik

    Septa, 16 mm diameter, butyl red/PTFE grey, 55° shore A, 1,6mm, 10 x 100 pc

    $210.55
    sku: AAV27132495
  20. Pharma-Fix-Septa, 20 mm diameter, butyl/PTFE, 50° shore A, 3,0mm, 10 x 100 pc
    Altmann Analytik

    Pharma-Fix-Septa, 20 mm diameter, butyl/PTFE, 50° shore A, 3,0mm, 10 x 100 pc

    $459.29
    sku: AAV31131146
  21. Univ. HT Inject. Port septa, 11 mm diameter, transp., 25/PAK
    Altmann Analytik

    Univ. HT Inject. Port septa, 11 mm diameter, transp., 25/PAK

    $48.35
    sku: AAV22292049
  22. Headspace Crimp Caps, 20 mm diameter, PTFE/Silicone Septa, 1000/PAK
    PerkinElmer

    Headspace Crimp Caps, 20 mm diameter, PTFE/Silicone Septa, 1000/PAK

    $784.44
    sku: PEB4000022
  23. Septa, 16 mm diameter, 1,3mm, 10 x 100 pc, Nat.rubber red-orange/TEF transp.
    Altmann Analytik

    Septa, 16 mm diameter, 1,3mm, 10 x 100 pc

    $205.58
    sku: AAV27131764
  24. Septa, 10/90, Teflon/Silicone for 15-425, 100/PAK
    National Scientific

    Septa, 10/90, Teflon/Silicone for 15-425, 100/PAK

    $30.00
    sku: TFB7995-15
  25. Septa, 10/90, Teflon/Silicone for 18-400, 100/PAK
    National Scientific

    Septa, 10/90, Teflon/Silicone for 18-400, 100/PAK

    $39.60
    sku: TFB7995-18
  26. Crimp Top Aluminum Cap, 20 mm, silver, with PTFE/Silicone Septa, 100/PAK
    PerkinElmer

    Crimp Top Aluminum Cap, 20 mm, silver, with PTFE/Silicone Septa, 100/PAK

    $92.22
    sku: PEB0104241
  27. Headspace Crimp Caps, 20 mm diameter, PTFE/Butyl Septa, 1000/PAK
    PerkinElmer

    Headspace Crimp Caps, 20 mm diameter, PTFE/Butyl Septa, 1000/PAK

    $652.22
    sku: PEB4000025
  28. Septa for 20 mm Crimp Caps, 100 pc/PAK
    National Scientific

    Septa for 20 mm Crimp Caps, 100 pc/PAK

    $70.80
    sku: TFC4020-32
  29. Univ. HT Inject. Port septa, 9,5 mm diameter, transp., 25/PAK
    Altmann Analytik

    Univ. HT Inject. Port septa, 9,5 mm diameter, transp., 25/PAK

    $48.35
    sku: AAV20292047
  30. Univ. HT Inject. Port septa, 12,5 mm diameter, transp., 25/PAK
    Altmann Analytik

    Univ. HT Inject. Port septa, 12,5 mm diameter, transp., 25/PAK

    $48.35
    sku: AAV23292050
  31. Universal HT Injection Port septa, 17 mm diameter, transp., 25/PAK
    Altmann Analytik

    Universal HT Injection Port septa, 17 mm diameter, transp., 25/PAK

    $48.35
    sku: AAV28292051
  32. Septa, 8 mm diameter, Viton 1A schw., 1,5 mm 1000/pck
    Altmann Analytik

    Septa, 8 mm diameter, Viton 1A schw., 1,5 mm 1000/pck

    $504.10
    sku: AAV19131331
  33. Septa, 8 mm diameter, silicone bl. transp./PTFE white, 1,3 mm, 1000/pck
    Altmann Analytik

    Septa, 8 mm diameter, silicone bl. transp./PTFE white, 1,3 mm, 1000/pck

    $248.62
    sku: AAV19131674
  34. Septa, 8 mm diameter, Viton 1A black, 1,0 mm, 1000/pck
    Altmann Analytik

    Septa, 8 mm diameter, Viton 1A black, 1,0 mm, 1000/pck

    $504.10
    sku: AAV19131885
  35. Septa, ND8, 8 mm diameter, PTFE grey/butyl red/PTFE grey, 55° shore A, 1,3 mm, 10x100/pck
    Altmann Analytik

    Septa, ND8, 8 mm diameter, PTFE grey/butyl red/PTFE grey, 55° shore A, 1,3 mm, 10x100/pck

    $121.57
    sku: AAV19132791
  36. Septa for short thread screw cap, ND9, PTFE, 1000/pck
    Altmann Analytik

    Septa for short thread screw cap, ND9, PTFE, 1000/pck

    $42.89
    sku: AAV20132091
  37. Septa, 10 mm diameter, PTFE red/silicone white/PTFE red, 1,0 mm, 1000/pck
    Altmann Analytik

    Septa, 10 mm diameter, PTFE red/silicone white/PTFE red, 1,0 mm, 1000/pck

    $388.50
    sku: AAV20132372
  38. Septa, 10 mm diameter, silicone white/PTFE blue, slit, 1,5 mm, 1000/pck
    Altmann Analytik

    Septa, 10 mm diameter, silicone white/PTFE blue, slit, 1,5 mm, 1000/pck

    $513.25
    sku: AAV20132438
  39. Septa for short thread screw cap, ND9, natural rubber red-orange/TEF transp. 0.2mm, 1000/pck
    Altmann Analytik

    Septa for short thread screw cap, ND9, natural rubber red-orange/TEF transp., 1000/pck

    $130.36
    sku: AAV20132890
  40. Septa for short thread screw cap, ND9, PTFE red/silicone white/PTFE red, 1mm, 1000/pck
    Altmann Analytik

    Septa for short thread screw cap, ND9, PTFE red/silicone white/PTFE red, 1000/pck

    $346.88
    sku: AAV20132892
  41. Septa for short thread screw cap, ND9, silicone white/PTFE blue, 1000/pck, silicone white/PTFE blue, with slit
    Altmann Analytik

    Septa for short thread screw cap, ND9, silicone white/PTFE blue, 1000/pck

    $430.14
    sku: AAV20133053
  42. Septa, 10 mm diameter, PTFE virginal, 0,25mm 1000/pck
    Altmann Analytik

    Septa, 10 mm diameter, PTFE virginal, 0,25mm 1000/pck

    $44.56
    sku: AAV21131757
  43. Septa, 17 mm diameter, silicone blue transp./PTFE white, 1,3mm, 10 x 100 pc
    Altmann Analytik

    Septa, 17 mm diameter, silicone blue transp./PTFE white, 1,3mm, 10 x 100 pc

    $594.98
    sku: AAV28132528
  44. Septa, 17 mm diameter, silicone white/aluminium foil, silver, 50°, 1,3mm, 10 x 100 pc
    Altmann Analytik

    Septa, 17 mm diameter, silicone white/aluminium foil, silver, 50°, 1,3mm, 10 x 100 pc

    $947.96
    sku: AAV28132984
  45. septa, ND20, 3,0mm, Si blue transp./PTFE white, 10 x 100 pc
    Altmann Analytik

    septa, ND20, 3,0mm, Si blue transp./PTFE white, 10 x 100 pc

    $590.78
    sku: AAV31131252
  46. Septa, 22 mm diameter, 3,2 mm, EPA-quality, 10 x 100 pc, silicone white/PTFE beige
    Altmann Analytik

    Septa, 22 mm diameter, 3,2 mm, EPA-quality, 10 x 100 pc

    $538.46
    sku: AAV33132219
  47. 30,3mm Septa, silicone creme/PTFE beige, 55°shore A, 3,2mm, for SCHOTT screw cap GL 32, 1000/pck
    Altmann Analytik

    30,3mm Septa, silicone creme/PTFE beige, 55°shore A, 3,2mm, for SCHOTT screw cap GL 32, 1000/pck

    $855.18
    sku: AAV41131582
  48. Septa, ND8, 8 mm diameter, silicone creme/PTFE red, 55° shore A, 1,5 mm, 1000/pck
    Altmann Analytik

    Septa, ND8, 8 mm diameter, silicone creme/PTFE red, 55° shore A, 1,5 mm, 1000/pck

    $236.89
    sku: AAV19131120
  49. Septa, ND8, 8 mm diameter, silicone white/PTFE blue, slit, 55° shore A, 0,9 mm, 1000/pck
    Altmann Analytik

    Septa, ND8, 8 mm diameter, silicone white/PTFE blue, slit, 55° shore A, 0,9 mm, 1000/pck

    $496.70
    sku: AAV19131150
  50. Septa, ND8, 8 mm diameter, natural rubber red-orange/TEF transp., 60° shore A, 1,3 mm, 10 x 100 pc
    Altmann Analytik

    Septa, ND8, 8 mm diameter, natural rubber red-orange/TEF transp., 60° shore A, 1,3 mm, 10 x 100 pc

    $69.25
    sku: AAV19131466
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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.).

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