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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 101-150 of 255

Product Image of 8 mm x 0.010
8 mm x 0.010" White PTFE with Slit Septa, 10 x 100 pc/PAK
Item number: USV601080-08
Brand: JG Finneran
$118.66
Product Image of 20 mm x 0.010
20 mm x 0.010" White PTFE Septa, 10 x 100 pc/PAK
Item number: USV601010-20
Brand: JG Finneran
$102.68
Product Image of 13 mm x 0.010
13 mm x 0.010" White PTFE Septa, 10 x 100 pc/PAK
Item number: USV601010-13
Brand: JG Finneran
$39.44
Product Image of 10 mm x 0.010
10 mm x 0.010" White PTFE Septa, 10 x 100 pc/PAK
Item number: USV601010-10
Brand: JG Finneran
$38.59
Product Image of 9 mm x 0.010” White PTFE Septa, 10 x 100 pc/PAK
9 mm x 0.010” White PTFE Septa, 10 x 100 pc/PAK
Item number: USV601010-09
Brand: JG Finneran
$36.21
Product Image of 8 mm x 0.010” White PTFE Septa, 10 x 100 pc/PAK
8 mm x 0.010” White PTFE Septa, 10 x 100 pc/PAK
Item number: USV601010-08
Brand: JG Finneran
$32.98
Product Image of Septa, 8mm, White Silicone Rubber / Red PTFE, 0.045
Septa, 8mm, White Silicone Rubber / Red PTFE, 0.045" thick, 0.321" diameter, MicroSolv Brand, 1000 pc/PAK
Item number: MV9582S-10X-K
Brand: Microsolv
$157.47
Product Image of Septa, 8mm, White Silicone Rubber / Beige PTFE that is 0.060
Septa, 8mm, White Silicone Rubber / Beige PTFE that is 0.060" thick and 0.319" diameter for use in 8-425mm thread caps, MicroSolv Brand, 1000 pc/PAK
Item number: MV96008-10-5010
Brand: Microsolv
$183.18
Product Image of Septa, 20mm, Headspace, White Silicone Rubber / Silver Foil. for use in 20mm Crimp Caps. High Temperature. MicroSolv Brand, 1000 pc/PAK
Septa, 20mm, Headspace, White Silicone Rubber / Silver Foil. for use in 20mm Crimp Caps. High Temperature. MicroSolv Brand, 1000 pc/PAK
Item number: MV95025-14
Brand: Microsolv
$1,676.66
Product Image of Septa, 20mm, Headspace, White Silicone Rubber / Beige PTFE, for use in 20mm Crimp Caps, MicroSolv Brand, 1000 pc/PAK
Septa, 20mm, Headspace, White Silicone Rubber / Beige PTFE, for use in 20mm Crimp Caps, MicroSolv Brand, 1000 pc/PAK
Item number: MV95025-07
Brand: Microsolv
$371.72
Product Image of Septa, 20mm, Headspace, Molded, Grey Butyl Rubber / Light Grey Rubber with Laminated PTFE, for use in 20mm Crimp Caps, Pharma-Fix type Septa, MicroSolv Brand, 1000 pc/PAK
Septa, 20mm, Headspace, Molded, Grey Butyl Rubber / Light Grey Rubber with Laminated PTFE, for use in 20mm Crimp Caps, Pharma-Fix type Septa, MicroSolv Brand, 1000 pc/PAK
Item number: MV95025-03
Brand: Microsolv
$762.16
Product Image of Septa, 20mm, Headspace, Molded Butyl Rubber, Grey, Stopper, For use in 20mm Crimp Caps, sold separately, MicroSolv Brand,, 100 pc/PAK
Septa, 20mm, Headspace, Molded Butyl Rubber, Grey, Stopper, For use in 20mm Crimp Caps, sold separately, MicroSolv Brand,, 100 pc/PAK
Item number: MV95025-06
Brand: Microsolv
$60.08
Product Image of Septa, 20mm, Headspace, Molded Butyl Rubber, Grey, completely laminated with transparent PTFE, for 20mm Crimp Caps, MicroSolv Brand, 1000 pc/PAK
Septa, 20mm, Headspace, Molded Butyl Rubber, Grey, completely laminated with transparent PTFE, for 20mm Crimp Caps, MicroSolv Brand, 1000 pc/PAK
Item number: MV95025-02
Brand: Microsolv
$552.05
Product Image of Septa, 20mm, Headspace, Blue Silicone Rubber completely laminated with Transparent PTFE, for 20mm Crimp Caps, MicroSolv Brand, 1000 pc/PAK
Septa, 20mm, Headspace, Blue Silicone Rubber completely laminated with Transparent PTFE, for 20mm Crimp Caps, MicroSolv Brand, 1000 pc/PAK
Item number: MV95025-04
Brand: Microsolv
$987.27
Product Image of Septa, 17.5mm, Headspace, White Silicone Rubber / Blue PTFE. for 18mm Aluminum, Screw Caps, MicroSolv Brand, 1000 pc/PAK
Septa, 17.5mm, Headspace, White Silicone Rubber / Blue PTFE. for 18mm Aluminum, Screw Caps, MicroSolv Brand, 1000 pc/PAK
Item number: MV95020-23
Brand: Microsolv
$1,209.53
Product Image of Septa, 17.5mm, Headspace, Transparent, Bluish Silicone Rubber / White PTFE. for 18mm Aluminum, Screw Caps, MicroSolv Brand, 1000 pc/PAK
Septa, 17.5mm, Headspace, Transparent, Bluish Silicone Rubber / White PTFE. for 18mm Aluminum, Screw Caps, MicroSolv Brand, 1000 pc/PAK
Item number: MV95025-22
Brand: Microsolv
$1,424.24
Product Image of Septa, 17.5mm, Headspace, Reddish Brown Butyl Rubber/Grey PTFE, For use in 18mm Aluminum, Screw Caps, MicroSolv Brand. 1000pc/PAK
Septa, 17.5mm, Headspace, Reddish Brown Butyl Rubber/Grey PTFE, For use in 18mm Aluminum, Screw Caps, MicroSolv Brand. 1000pc/PAK
Item number: MV95025-21
Brand: Microsolv
$447.01
Product Image of Septa, 13mm, PTFE Disc for use in 13-425mm thread, 15x45mm autosampler vial caps, Caps sold separately, MicroSolv Brand, 100 pc/PAK
Septa, 13mm, PTFE Disc for use in 13-425mm thread, 15x45mm autosampler vial caps, Caps sold separately, MicroSolv Brand, 100 pc/PAK
Item number: MV9504S-05-PTFE
Brand: Microsolv
$9.96
Product Image of Septa, PTFE Disc, MicroSolv Brand, 13 mm, for 13-425mm Thread Caps, MicroSolv Brand, 10 x 100 pc/PAK
Septa, PTFE Disc, MicroSolv Brand, 13 mm, for 13-425mm Thread Caps, MicroSolv Brand, 10 x 100 pc/PAK
Item number: MV9504S-05-PTFE-M
Brand: Microsolv
$71.71
Product Image of Septa, 11mm, for Crimp Caps, White Silicone Rubber / Red PTFE, 1,9mm thick, Use with 11mm caps, MicroSolv Brand, 100 pc/PAK
Septa, 11mm, for Crimp Caps, White Silicone Rubber / Red PTFE, 1,9mm thick, Use with 11mm caps, MicroSolv Brand, 100 pc/PAK
Item number: MV9502C-10-11
Brand: Microsolv
$29.84
Product Image of Septa, 11mm, for Crimp Caps, Red Butyl Rubber / Grey PTFE, 1,3mm thick, Use with 11mm Caps, MicroSolv Brand, 1000 pc/PAK
Septa, 11mm, for Crimp Caps, Red Butyl Rubber / Grey PTFE, 1,3mm thick, Use with 11mm Caps, MicroSolv Brand, 1000 pc/PAK
Item number: MV9502C-40-11
Brand: Microsolv
$232.84
Product Image of Septa 10mm, white Silicone Rubber/beige PTFE, 1,5mm, for use in 10-425 screw caps, MicroSolv Brand, 1000 pc/PAK
Septa 10mm, white Silicone Rubber/beige PTFE, 1,5mm, for use in 10-425 screw caps, MicroSolv Brand, 1000 pc/PAK
Item number: MV96010-10-1501
Brand: Microsolv
$528.30
Product Image of Septa, 9mm, White Silicone Rubber/Natural PTFE, 0.040
Septa, 9mm, White Silicone Rubber/Natural PTFE, 0.040" thick, 0.346" diameter, 1000 pc/PAK
Item number: MV96009-10-3010
Brand: Microsolv
$138.15
Product Image of Septa, 9mm, Orange Silicone Rubber/White PTFE, 0.040
Septa, 9mm, Orange Silicone Rubber/White PTFE, 0.040" thick, 0.344" diameter, for use in 9-425mm thread caps, BASIK Brand, 1000 pc/PAK
Item number: MV96009-10T-4010
Brand: Microsolv
$276.58
Product Image of Septa 22mm, translucent silicone rubber/ natural PTFE, ultra low bleed. 2.5mm thick. For use with 24mm Screw Caps, Basik Brand, 1000 pc/PAK
Septa 22mm, translucent silicone rubber/ natural PTFE, ultra low bleed. 2.5mm thick. For use with 24mm Screw Caps, Basik Brand, 1000 pc/PAK
Item number: MV97041-09
Brand: Microsolv
$711.61
Product Image of Septa, 22mm, natural silicone rubber/ natural PTFE, ultra low bleed. For use with 24mm Caps, Basik Brand, 1000 pc/PAK
Septa, 22mm, natural silicone rubber/ natural PTFE, ultra low bleed. For use with 24mm Caps, Basik Brand, 1000 pc/PAK
Item number: MV97041-11
Brand: Microsolv
$816.80
Product Image of Headspace Septa 20mm, white Siicone Rubberl/white PTFE, Ultra Low Bleed, for use in crimp caps, Basik Brand, 1000 pc/PAK
Headspace Septa 20mm, white Siicone Rubberl/white PTFE, Ultra Low Bleed, for use in crimp caps, Basik Brand, 1000 pc/PAK
Item number: MV95025-08
Brand: Microsolv
$395.68
Product Image of Headspace Septa 20mm, white Silicone Rubber/blue PTFE, for use in crimp caps, Basik Brand, 1000 pc/PAK
Headspace Septa 20mm, white Silicone Rubber/blue PTFE, for use in crimp caps, Basik Brand, 1000 pc/PAK
Item number: MV95025-23
Brand: Microsolv
$395.69
Product Image of Headspace Septa 20mm translucent Silicone Rubber/natural PTFE, Ultra Low Bleed, for use in crimp caps, , Basik Brand, 1000 pc/PAK
Headspace Septa 20mm translucent Silicone Rubber/natural PTFE, Ultra Low Bleed, for use in crimp caps, , Basik Brand, 1000 pc/PAK
Item number: MV95025-09
Brand: Microsolv
$408.19
Product Image of Headspace Septa, clear Sil/PTFE 90/10, for use in 20mm Crimp Caps, Basik Brand, 1000 pc/PAK
Headspace Septa, clear Sil/PTFE 90/10, for use in 20mm Crimp Caps, Basik Brand, 1000 pc/PAK
Item number: MV96020-1X-9010
Brand: Microsolv
$586.34
Product Image of Headspace Septa, clear Sil/PTFE for use in 20mm Crimp Caps, Basik Brand, 1000 pc/PAK
Headspace Septa, clear Sil/PTFE for use in 20mm Crimp Caps, Basik Brand, 1000 pc/PAK
Item number: MV96020-1X-5010
Brand: Microsolv
$464.80
Product Image of GL 45 PTFE coated VMQ High-temperature Cap Liner 43.5x3.0mm, 10 pc/PAK
GL 45 PTFE coated VMQ High-temperature Cap Liner 43.5x3.0mm, 10 pc/PAK
Item number: DU292490909
Brand: Duran Group
$78.30
Product Image of DURAN® PURE Silicone seal, on both sides PTFE-coated, platinum cured Silicone, GLS80, 10 pc/PAK
DURAN® PURE Silicone seal, on both sides PTFE-coated, platinum cured Silicone, GLS80, 10 pc/PAK
Item number: DU292489102
Brand: Duran Group
$193.02
Product Image of DURAN® PURE Silicone Seal PTFE-coated, platinum cured silicone, GL45, 10 pc/PAK
DURAN® PURE Silicone Seal PTFE-coated, platinum cured silicone, GL45, 10 pc/PAK
Item number: DU292482958
Brand: Duran Group
$136.29
Product Image of DURAN® PURE Silicone Seal PTFE-coated, platinum cured silicone, GL 25, 10 pc/PAK
DURAN® PURE Silicone Seal PTFE-coated, platinum cured silicone, GL 25, 10 pc/PAK
Item number: DU292481456
Brand: Duran Group
$74.95
Product Image of Replacement seals, 83 B, for screw cap 712160-0830, 5 pc/PAK
Replacement seals, 83 B, for screw cap 712160-0830, 5 pc/PAK
Item number: NL7121621830
Brand: Nalgene Thermo Scientific
$81.47
Product Image of 16.7 mm Septum, natural rubber red-orange/TEF transparent, 60° shore A, 1.3 mm, 1000 pc/PAK
16.7 mm Septum, natural rubber red-orange/TEF transparent, 60° shore A, 1.3 mm, 1000 pc/PAK
Item number: AAV160894
Brand: Altmann Analytik
$225.52
Product Image of 11.2 mm Septum, natural rubber red orange/TEF transparent, 55 shore A, 1 mm, 1000 pc/PAK
11.2 mm Septum, natural rubber red orange/TEF transparent, 55 shore A, 1 mm, 1000 pc/PAK
Item number: AAV110080
Brand: Altmann Analytik
$130.51
Product Image of 8.2 mm Septum, natural rubber red orange/TEF transparent, 55 shore A, 1.3 mm, 1000 pc/PAK
8.2 mm Septum, natural rubber red orange/TEF transparent, 55 shore A, 1.3 mm, 1000 pc/PAK
Item number: AAV081103
Brand: Altmann Analytik
$77.39
Product Image of 19.5 mm Septum, natural rubber red-orange/TEF transparent, 60° shore A, 1 mm, 1000 pc/PAK
19.5 mm Septum, natural rubber red-orange/TEF transparent, 60° shore A, 1 mm, 1000 pc/PAK
Item number: AAV190902
Brand: Altmann Analytik
$231.65
Product Image of 13.7 mm Septum, silicone white/ PTFE red, 45° shore A, 1.3 mm, 1000 pc/PAK
13.7 mm Septum, silicone white/ PTFE red, 45° shore A, 1.3 mm, 1000 pc/PAK
Item number: AAV141054
Brand: Altmann Analytik
$366.24
Product Image of 12 mm Septum, natural rubber red-orange/ TEF transparent, 60° shore A, 1.3 mm, 1000 pc/PAK
12 mm Septum, natural rubber red-orange/ TEF transparent, 60° shore A, 1.3 mm, 1000 pc/PAK
Item number: AAV120481
Brand: Altmann Analytik
$91.18
Product Image of Septa red PTFE/White Sil., 12 mm diameter, 100 pc/PAK, n/White Silicone septa, 0.075, 12mm for 4ml screw
Septa red PTFE/White Sil., 12 mm diameter, 100 pc/PAK, n/White Silicone septa, 0.075, 12mm for 4ml screw
Item number: AG5183-4460
Brand: Agilent Technologies
$29.80
Product Image of Septa, 22 mm diameter, PTFE, 0,25mm, 10 x 100 pc
Septa, 22 mm diameter, PTFE, 0,25mm, 10 x 100 pc
Item number: AAV33132212
Brand: Altmann Analytik
$209.70
Product Image of Septa, 19 mm diameter, silicone blue transparent/PTFE white, 45° shore A, 1,3mm, Y-slit, 10 x 100 pc
Septa, 19 mm diameter, silicone blue transparent/PTFE white, 45° shore A, 1,3mm, Y-slit, 10 x 100 pc
Item number: AAV30132934
Brand: Altmann Analytik
$377.74
Product Image of Universal HT Injection Port septa, 17 mm diameter, transp., 25/PAK
Universal HT Injection Port septa, 17 mm diameter, transp., 25/PAK
Item number: AAV28292051
Brand: Altmann Analytik
$47.24
Product Image of Septa, 12 mm diameter silicone blue transp./PTFE white, 45° shore A, 1,3mm, 10x100/pck
Septa, 12 mm diameter silicone blue transp./PTFE white, 45° shore A, 1,3mm, 10x100/pck
Item number: AAV23131719
Brand: Altmann Analytik
$465.13
Product Image of Univ. HT Inject. Port septa, 11 mm diameter, transp., 25/PAK
Univ. HT Inject. Port septa, 11 mm diameter, transp., 25/PAK
Item number: AAV22292049
Brand: Altmann Analytik
$60.72
Product Image of Septa, 11 mm diameter, silicone white/PTFE red, 45° shore A, 1,3 mm, 10 x 100 pc
Septa, 11 mm diameter, silicone white/PTFE red, 45° shore A, 1,3 mm, 10 x 100 pc
Item number: AAV22131215
Brand: Altmann Analytik
$275.32
Product Image of Septa, 10 mm diameter, silicone white/PTFE blue, slit, 1,5 mm, 1000/pck
Septa, 10 mm diameter, silicone white/PTFE blue, slit, 1,5 mm, 1000/pck
Item number: AAV20132438
Brand: Altmann Analytik
$427.48

Items 101-150 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.).