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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 PerkinElmer and our home brand Altmann Analytik. These septa are a low cost and high quality alternative.

Detailed information on the properties and the selection of a suitable septum can be found here.

Items 51-100 of 255

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
$255.41
Product Image of Septa for short thread screw cap, ND9, PTFE, 1000/pck
Septa for short thread screw cap, ND9, PTFE, 1000/pck
Item number: AAV20132091
Brand: Altmann Analytik
$50.82
Product Image of Septa, 8 mm diameter, red rubber/PTFE beige, 45° shore A, 1,0 mm, 10x100/pck
Septa, 8 mm diameter, red rubber/PTFE beige, 45° shore A, 1,0 mm, 10x100/pck
Item number: AAV19133077
Brand: Altmann Analytik
$95.45
Product Image of Septa, ND8, 8 mm diameter, butyl red/PTFE grey, 55° shore A, 1,3mm, 10x100/pck
Septa, ND8, 8 mm diameter, butyl red/PTFE grey, 55° shore A, 1,3mm, 10x100/pck
Item number: AAV19132744
Brand: Altmann Analytik
$111.35
Product Image of Septa, 8 mm diameter, Viton 1A black, 1,0 mm, 1000/pck
Septa, 8 mm diameter, Viton 1A black, 1,0 mm, 1000/pck
Item number: AAV19131885
Brand: Altmann Analytik
$535.83
Product Image of Septa, 8 mm diameter, silicone bl. transp./PTFE white, 1,3 mm, 1000/pck
Septa, 8 mm diameter, silicone bl. transp./PTFE white, 1,3 mm, 1000/pck
Item number: AAV19131674
Brand: Altmann Analytik
$275.32
Product Image of Septa, ND8, 8 mm diameter, natural rubber red-orange/TEF transp., 60° shore A, 1,3 mm, 10 x 100 pc
Septa, ND8, 8 mm diameter, natural rubber red-orange/TEF transp., 60° shore A, 1,3 mm, 10 x 100 pc
Item number: AAV19131466
Brand: Altmann Analytik
$83.35
Product Image of Septa, ND8, 8 mm diameter, natural rubber red-orange/TEF transp., 60° shore A, 1,0 mm, 1000/pck
Septa, ND8, 8 mm diameter, natural rubber red-orange/TEF transp., 60° shore A, 1,0 mm, 1000/pck
Item number: AAV19131343
Brand: Altmann Analytik
$77.97
Product Image of Septa, 8 mm diameter, Viton 1A schw., 1,5 mm 1000/pck
Septa, 8 mm diameter, Viton 1A schw., 1,5 mm 1000/pck
Item number: AAV19131331
Brand: Altmann Analytik
$535.83
Product Image of Septa, ND8, 8 mm diameter, PTFE, 53° shore D, 0,25 mm, 1000/pck
Septa, ND8, 8 mm diameter, PTFE, 53° shore D, 0,25 mm, 1000/pck
Item number: AAV19131288
Brand: Altmann Analytik
$35.50
Product Image of Septa, ND8, 8 mm diameter, silicone white/PTFE red, 45° shore A, 1,3 mm, 1000/pck
Septa, ND8, 8 mm diameter, silicone white/PTFE red, 45° shore A, 1,3 mm, 1000/pck
Item number: AAV19131214
Brand: Altmann Analytik
$216.43
Product Image of Septa, ND8, 8 mm diameter, silicone white/PTFE blue, slit, 55° shore A, 0,9 mm, 1000/pck
Septa, ND8, 8 mm diameter, silicone white/PTFE blue, slit, 55° shore A, 0,9 mm, 1000/pck
Item number: AAV19131150
Brand: Altmann Analytik
$482.71
Product Image of Septa, ND8, 8 mm diameter, silicone creme/PTFE red, 55° shore A, 1,5 mm, 1000/pck
Septa, ND8, 8 mm diameter, silicone creme/PTFE red, 55° shore A, 1,5 mm, 1000/pck
Item number: AAV19131120
Brand: Altmann Analytik
$216.43
Product Image of Septa, ND8, 8 mm diameter, PTFE red/silicone white/PTFE red, 45° shore A, 1,0 mm, 10 x 100 pc
Septa, ND8, 8 mm diameter, PTFE red/silicone white/PTFE red, 45° shore A, 1,0 mm, 10 x 100 pc
Item number: AAV19131116
Brand: Altmann Analytik
$347.60
Product Image of 13.7mm Septa, butyl cream/PTFE grey, 55° shore A, 1.3mm, 1000 pc/PAK
13.7mm Septa, butyl cream/PTFE grey, 55° shore A, 1.3mm, 1000 pc/PAK
Item number: AAV141641
Brand: Altmann Analytik
$187.72
Product Image of 22.5 mm x 0.060
22.5 mm x 0.060" PTFE/Silicone Septa, 10 x 100 pc/PAK
Item number: USV606050-24
Brand: JG Finneran
$415.31
Product Image of 8 mm x 0.065” Tan PTFE/Silicone Septa, 10 x 100 pc/PAK
8 mm x 0.065” Tan PTFE/Silicone Septa, 10 x 100 pc/PAK
Item number: USV606550T-08
Brand: JG Finneran
$124.61
Product Image of 8 mm x 0.065
8 mm x 0.065" Blue PTFE/Silicone Septa, 10 x 100 pc/PAK
Item number: USV606550B-08
Brand: JG Finneran
$187.34
Product Image of 8 mm x 0.065
8 mm x 0.065" Red PTFE/Silicone Septa, 10 x 100 pc/PAK
Item number: USV606550-08
Brand: JG Finneran
$133.28
Product Image of 10 mm x 0.060
10 mm x 0.060" Red PTFE/Silicone with Slit Septa, 10 x 100 pc/PAK
Item number: USV606070-10
Brand: JG Finneran
$338.47
Product Image of 8 mm x 0.060
8 mm x 0.060" Red PTFE/Silicone with Slit Septa, 10 x 100 pc/PAK
Item number: USV606070-08
Brand: JG Finneran
$331.84
Product Image of 18 mm x 0.060
18 mm x 0.060" Gray PTFE/Silicone Septa for Dram Vials, to fit 20-400 mm Closure, 10 x 100 pc/PAK
Item number: USV606050G-20
Brand: JG Finneran
$363.12
Product Image of 16 mm x 0.060
16 mm x 0.060" Gray PTFE/Silicone Septa for Dram Vials, to fit 18-400 mm Closure, 10 x 100 pc/PAK
Item number: USV606050G-18
Brand: JG Finneran
$317.39
Product Image of 13.6 mm x 0.060
13.6 mm x 0.060" Gray PTFE/Silicone Septa for Dram Vials, to fit 15-425 mm Closure, 10 x 100 pc/PAK
Item number: USV606050G-15
Brand: JG Finneran
$255.34
Product Image of 12 mm x 0.060
12 mm x 0.060" Gray PTFE/Silicone Septa for Dram Vials, to fit 13-425 mm Closure, 10 x 100 pc/PAK
Item number: USV606050G-13
Brand: JG Finneran
$214.03
Product Image of 17.5 mm x 0.060
17.5 mm x 0.060" Blue PTFE/Silicone Septa for 18 mm Magnetic Threaded Closure, 10 x 100 pc/PAK
Item number: USV606050B-18M
Brand: JG Finneran
$408.17
Product Image of 20 mm x 0.060
20 mm x 0.060" Tan PTFE/White Silicone Septa, 10 x 100 pc/PAK
Item number: USV606050-22
Brand: JG Finneran
$504.39
Product Image of 19 mm x 0.060
19 mm x 0.060" Gray PTFE/Silicone Septa for 20 mm Aluminum Seals, 10 x 100 pc/PAK
Item number: USV606050-20S
Brand: JG Finneran
$359.04
Product Image of 14.5 mm x 0.060
14.5 mm x 0.060" Red PTFE/Silicone Septa, 10 x 100 pc/PAK
Item number: USV606050-15
Brand: JG Finneran
$314.33
Product Image of 13 mm x 0.060
13 mm x 0.060" Red PTFE/Silicone Septa, 10 x 100 pc/PAK
Item number: USV606050-13
Brand: JG Finneran
$196.18
Product Image of 10 mm x 0.060
10 mm x 0.060" Red PTFE/Silicone Septa, 10 x 100 pc/PAK
Item number: USV606050-10
Brand: JG Finneran
$178.50
Product Image of 13 mm x 0.060
13 mm x 0.060" PTFE/Red Rubber Septa, 10 x 100 pc/PAK
Item number: USV606040-13
Brand: JG Finneran
$154.53
Product Image of 10 mm x 0.050
10 mm x 0.050" Red PTFE/Silicone Septa, 10 x 100 pc/PAK
Item number: USV605050-10
Brand: JG Finneran
$181.56
Product Image of 8 mm x 0.050
8 mm x 0.050" Red PTFE/Silicone Septa, 10 x 100 pc/PAK
Item number: USV605050-08
Brand: JG Finneran
$135.15
Product Image of 8 mm x 0.045
8 mm x 0.045" Red PTFE/Silicone Septa, 10 x 100 pc/PAK
Item number: USV604550-08
Brand: JG Finneran
$132.60
Product Image of 10 mm x 0.040
10 mm x 0.040" Red PTFE/Silicone with Slit Septa, 10 x 100 pc/PAK
Item number: USV604070-10
Brand: JG Finneran
$358.36
Product Image of 9 mm x 0.040
9 mm x 0.040" Red PTFE/Silicone with Slit Septa, 10 x 100 pc/PAK
Item number: USV604070-09
Brand: JG Finneran
$352.75
Product Image of 13 mm x 0.040
13 mm x 0.040" Red PTFE/Silicone/Red PTFE Septa, 10 x 100 pc/PAK
Item number: USV604060-13
Brand: JG Finneran
$268.43
Product Image of 10 mm x 0.040
10 mm x 0.040" Red PTFE/Silicone/Red PTFE Septa, 10 x 100 pc/PAK
Item number: USV604060-10
Brand: JG Finneran
$262.65
Product Image of 9 mm x 0.040
9 mm x 0.040" Red PTFE/Silicone/Red PTFE Septa, 10 x 100 pc/PAK
Item number: USV604060-09
Brand: JG Finneran
$234.94
Product Image of 8 mm x 0.040
8 mm x 0.040" Red PTFE/Silicone/Red PTFE Septa, 10 x 100 pc/PAK
Item number: USV604060-08
Brand: JG Finneran
$223.38
Product Image of 9 mm x 0.040
9 mm x 0.040" PTFE/Silicone Septa, 10 x 100 pc/PAK
Item number: USV604050-09
Brand: JG Finneran
$174.25
Product Image of 12 mm x 0.040
12 mm x 0.040" PTFE/Red Rubber Septa, 10 x 100 pc/PAK
Item number: USV604040-13
Brand: JG Finneran
$156.06
Product Image of 10 mm x 0.040
10 mm x 0.040" PTFE/Butyl Rubber Septa, 10 x 100 pc/PAK
Item number: USV604040-10F
Brand: JG Finneran
$211.14
Product Image of 10 mm x 0.040
10 mm x 0.040" PTFE/Red Rubber Septa, 10 x 100 pc/PAK
Item number: USV604040-10
Brand: JG Finneran
$144.50
Product Image of 9 mm x 0.040
9 mm x 0.040" PTFE/Butyl Rubber Septa, 10 x 100 pc/PAK
Item number: USV604040-09F
Brand: JG Finneran
$211.14
Product Image of 9 mm x 0.040
9 mm x 0.040" PTFE/Red Rubber Septa, 10 x 100 pc/PAK
Item number: USV604040-09
Brand: JG Finneran
$134.98
Product Image of 8 mm x 0.045
8 mm x 0.045" PTFE/Red Rubber Septa, 10 x 100 pc/PAK
Item number: USV604040-08
Brand: JG Finneran
$120.36
Product Image of 8 mm x 0.035
8 mm x 0.035" Red PTFE/Silicone with Slit Septa, 10 x 100 pc/PAK
Item number: USV603570-08
Brand: JG Finneran
$317.90
Product Image of 8 mm x 0.030
8 mm x 0.030" Black Viton® Septa, 10 x 100 pc/PAK
Item number: USV603090-08
Brand: JG Finneran
$362.95

Items 51-100 of 255

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

Material Application area
Natural rubber
  • 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
 		HPLC/GC
RedRubber / PTFE (synthetic rubber)
  • 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)
 		HPLC/GC
Butyl (septa / stopper)
  • 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)
 		Headspace
Pharma-Fix Septum Butyl / PTFE
  • 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)
 		GC/HPLC/Headspace
(PTFE /) silicone / PTFE
  • 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)
 		GC/HPLC/Headspace
Silicon / aluminum foil
  • 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
 		Headspace
Pure PTFE septa
  • 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
 		HPLC

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.).