Headspace Vials, Caps and Kits

Offering both screw-top & crimp-top headspace vials

Headspace vials are made of superior quality 1st hydrolytic class glass (Type 1) and have a thicker glass wall to withstand higher temperature and internal pressure for the analysis of volatile gas in the vial’s headspace. Thermo Scientific 20mm crimp top and 18mm screw top headspace vials are available in clear or amber glass in sizes ranging from 6mL to 27mL. Choose from a round or flat base with a beveled or square edge finish.

  • Round base vials are compatible with most autosamplers and more easily handled by robotic arms that lift the vial from the tray.
  • Flat base vials maximize heating efficiency in manual headspace sampling and are required for use in some instrument models.
  • The bevel edge on the lip of the vial provides additional sealing power for greater leak resistance under high pressure

Our screw top headspace vials are a novelty in a crimp-neck dominated field. They provide a ready-to-use, convenient solution that does not require crimping or decrimping tools. Headspace vials, septum and caps can be purchased in various quantities separately or as convenience kits.

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Thermo Scientific headspace vials and closures

20mm Crimp Top Headspace Vials

  • Superior quality 1st hydrolytic class glass (Type 1)
  • Headspace vials are available with either a round or flat base
  • Round bottom vials are compatible with most autosamplers and more easily handled by robotic arms that lift the vial from the tray
  • Flat bottom vials maximize heating efficiency in manual headspace sampling and are required for use in some instrument models
  • Vials feature beveled or square edge finish
  • The bevel edge on the lip of the vial provides additional sealing power for greater leak resistance under high pressure

20mm Crimp Top Headspace Vials

CatalogBrandGlassSizeNeckBaseTotalVol (mL)Useable Vol (mL)Product Size
C4020-60NationalClear22x38BeveledFlat961000
C4020-6NationalClear22x38Square RimFlat961000
4020-10NationalClear23x46BeveledFlat12.510100
C4020-210NationalClear23x46BeveledRound12.510100
C4020-410NationalClear23x46Square RimFlat12.5101000
C4020-20NationalClear23x75BeveledFlat21.520100
C4020-2NationalClear23x75BeveledRound21.520100
C4020-25NationalClear23x75Square RimFlat21.5201000
C4020-27NationalClear30x60BeveledFlat27251000
27-CVChromacolClear30x60BeveledFlat2727100
22-CVChromacolClear23x75BeveledRound2220125
20-CVChromacolClear22.5x75BeveledRound2120125
20-CV(A)ChromacolAmber22.5x75BeveledRound2120125
12-CVChromacolClear18x65BeveledRound1210100
10-CVChromacolClear22.5x46BeveledRound1210125
10-CV(A)ChromacolAmber22.5x46BeveledRound1210125
9-CVChromacolClear18x50BeveledRound109100
6-CVChromacolClear22x38BeveledRound86125

20mm Caps for 20mm Crimp Top Headspace Vials

  • Aluminum seals are available in standard center hole and pressure release versions
  • Pressure release seals (Aluminum-PR) are designed to open when internal pressure exceeds 3.0±0.5bar
  • Use magnetic tinplate seals with RSH/PAL/CTC/Leap Technologies, Gerstel and other magnetic transport autosamplers
  • Pre-assembled caps and septa are convenient and minimize contamination from handling

20mm Caps for 20mm Crimp Top Headspace Vials

CatalogBrandCrimp CapCap Color/MaterialProduct Size
C4020-5ANational20mm Tear-off Crimp CapSilver Aluminum1000
C4020-3ANational20mm Crimp Cap, 9.5mm holeSilver Aluminum1000
C4020-6ANational20mm Pressure Release Crimp Cap, 7.5mm holeSilver Aluminum -PR1000
20-ACBChromacol20mm Crimp Cap, 9mm holeSilver Aluminum500
20-MCBChromacol20mm Magnetic Crimp Cap, 6mm holeSilver Tinplate500
20-MCBCChromacol20mm Composite Magnetic Crimp Cap, 8mm holeBlue Aluminum/Tinplate500
20-MCBC(R)Chromacol20mm Composite Magnetic Crimp Cap, 8mm holeRed Aluminum/Tinplate500
20-PEPC5Chromacol20mm Plug Natural Polyethylene PE MembraneNatural Polyethylene250

20mm Septa for 20mm Crimp Top Headspace Vials

CatalogBrandSeptumHardness °shoreThickness(mm)Pack of
C4020-30National20mm Gray Bromobutyl Stopper37 –1000
C4020-32National20mm Tan PTFE/White Silicone453.2100
C4020-34National20mm Gray PTFE/Red Rubber503.0100
C4020-36National20mm Gray PTFE/Black Butyl Molded503.0100
C4020-40National20mm Unfaced Black Rubber553.0100
20-B3PChromacol20mm Gray Bromobutyl Stopper553.0500
20-2FB3Chromacol20mm Gray Butyl Freezer Bung553.02000
20-CB3Chromacol20mm Molded Gray Chlorobutyl523.01000
20-CBT3Chromacol20mm Molded Gray Bromobutyl/Gray PTFE523.01000
20-CBT3BChromacol20mm Molded Black Bromobutyl/Gray PTFE, Bellows Type523.01000
20-ASH3Chromacol20mm Red Silicone/ Aluminum Face Seal 3mm Thick, for >170°C.453.0100
20-AS3Chromacol20mm White Silicone/ Aluminum Face Seal 3mm Thick, for <170°C.453.0100
20-LLXChromacol20mm Silicone/PTFE for liquid-liquid extraction –0.25100
20-ST3Chromacol20mm Blue Silicone/ Natural PTFE453.0500
20-ST3HTChromacol20mm Red Silicone/ Natural PTFE, high temperature453.1100
20-ST15Chromacol20mm Blue Silicone/ Red PTFE Seal 1.5mm Thick201.5500
20-ST101Chromacol20mm Blue Silicone/ PTFE301.0500

20mm Cap-Septum Combination Seals for 20mm Crimp Top Headspace Vials

CatalogBrandCapCap Color/MaterialSeptumHardness(°shore)Thickness (mm)Pack of
C4020-34ANational20mm Crimp Cap, 9.5mm holeSilver/ Aluminum20mm Gray PTFE/ Red Rubber503.0100
C4020-34APNational20mm Pressure Release Crimp Cap, 8mm holeSilver/ Aluminum-PR20mm Gray PTFE/ Red Rubber503.0100
C4020-39ANational20mm Crimp Cap, 9.5mm holeSilver/ Aluminum20mm Clear PTFE/ Gray Butyl Rubber503.0100
C4020-43APNational20mm Pressure Release Crimp Cap, 8mm holeSilver/ Aluminum-PR20mm Clear PTFE/ Gray Butyl Rubber503.0100
C4020-36ANational20mm Crimp Cap, 9.5mm holeSilver/ Aluminum20mm Gray PTFE/ Gray Butyl Rubber, Pharmafix503.0100
C4020-36APNational20mm Pressure Release Crimp Cap, 8mm holeSilver/ Aluminum-PR20mm Gray PTFE/ Gray Butyl Rubber, Pharmafix503.0100
C4020-32ANational20mm Crimp Cap, 9.5mm holeSilver/ Aluminum20mm Tan PTFE/ White Silicone453.2100
C4020-32APNational20mm Pressure Release Crimp Cap, 8mm holeSilver/ Aluminum-PR20mm Tan PTFE/ White Silicone453.2100
C4020-38ANational20mm Magnetic Crimp Cap, 5mm holeGold/ Tin-plated20mm Clear PTFE/ Translucent Blue Silicone45 3.0100
C4020-42ANational20mm Magnetic Crimp Cap, 8mm holeGold/ Tin-plated20mm Clear PTFE/ Translucent Blue Silicone453.0100
C4020-42APNational20mm Pressure Release Crimp Cap, 7.5mm holeSilver/ Aluminum-PR20mm Clear PTFE/ Translucent Blue Silicone453.0100
20-AC-CBT3Chromacol20mm Crimp Cap, 9mm holeSilver/ Aluminum20mm Molded Gray/Bromobutyl/Gray PTFE523.0500
20-AC-ST3Chromacol20mm Crimp Cap, 9mm holeSilver/ Aluminum20mm Blue Silicone/Natural PTFE453.0500
20-MCBC-ST3Chromacol20mm Composite Magnetic Crimp Cap, 8mm holeBlue Aluminum/ Tinplate20mm Blue Silicone/Natural PTFE453.0500
20-MCBC(R)-CBT3Chromacol20mm Composite Magnetic Crimp Cap, 8mm holeRed Aluminum/ Tinplate20mm Molded Gray Chlorobutyl523.0500
20-MCBC(R)-ST3Chromacol20mm Composite Magnetic Crimp Cap, 8mm holeRed Aluminum/ Tinplate20mm Blue Silicone/Natural PTFE453.0500
20-MCB-ST3Chromacol20mm Magnetic Tinplate Crimp CapSilver Tinplate20mm Blue Silicone/Natural PTFE453.0500
20-MCBC(N)-ST3HTChromacol20mm Composite Magnetic Crimp Cap, 8mm holeNatural Aluminum/ Tinplate20mm Red Silicone/Natural PTFE, high temperature (250°C)453.1500

18mm Screw top headspace vials, caps, septa

Our screw top headspace vials are a novelty in a crimp-neck dominated field. They provide a ready-to-use, convenient solution that does not require crimping or decrimping tools. Headspace vials, septum and caps can be purchased in various quantities separately or as convenience kits.

18mm Headspace Screw Top Vials

CatalogBrandGlassSizeBaseTotalVol (mL)Useable Vol (mL)Product Size
C4020-180NationalClear22.5x46Round1210125
C4020-18NationalClear22.5x76Round2120125
20-HSVChromacolClear22.5x76Round2120125
10-HSVChromacolClear22.5x46Round1210125

18mm Closures for 18mm Screw Top Headspace Vials

CatalogBrandCapCap Color/MaterialSeptumHardness(°shore)Thickness (mm)Pack of
C4020-47National18mm Magnetic Screw Cap, 8mm holeSilver Steel18mm Blue Silicone/ Natural PTFE452.0125
C4020-48National18mm Magnetic Screw Cap, 8mm hole,SPME Silver Steel18mm Blue Silicone/PTFE, not prefitted30  1.0125
18-MSC-CBT3Chromacol18mm Magnetic Screw Cap, 8mm holeSilver Steel18mm Molded Blue Chlorobutyl/ Gray PTFE523.0  125
18-MSC-ST101Chromacol18mm Magnetic Screw Cap, 8mm holeSilver Steel18mm Blue Silicone/PTFE, not prefitted301.0125
18-MSC-ST201Chromacol18mm Magnetic Screw Cap, 8mm holeSilver Steel18mm Blue Silicone/Natural PTFE452.0125
18-MSC-ST3HTChromacol18mm Magnetic Screw Cap, 8mm holeSilver Steel18mm Red Silicone/Natural PTFE, high temperature (250°C)453.1125
18-MSCChromacol18mm Magnetic Screw Cap, 8mm holeSilver Steel125
18-ST101Chromacol18mm Blue Silicone/PTFE301.0125

Headspace Vial Convenience Kits (unassembled)

  • Includes matched quantities of vials and silver aluminum seals with pre-assembled septa

Unassembled Headspace Vial Convenience Kits

Convenience KitIncludes VialIncludes CapIncludes SeptumPack of 
C4020-13920mm Clear Headspace Crimp Vial, Beveled Edge, Round Base (C4020-2)Silver Pressure Release Crimp Cap, 7.5mm hole (C4020-36AP)Gray PTFE/Black Butyl Rubber, Pharmafix100
C4020-32020mm Clear Headspace Crimp Vial, Beveled Edge, Round Base (C4020-2)Silver Pressure Release Crimp Cap, 7.5mm hole (C4020-32AP)Tan PTFE/White Silicone1000
20-HSVST201-CP18mm Clear Headspace 20mL Screw Vial, Round Bottom, (20-HSV)Silver Steel Screw Cap, 8mm hole (18-MSCST201)18mm Blue Silicone/ Natural PTFE125
20-CVCBT3-CP20mL Clear Headspace Crimp Vial, Beveled Edge, Round Bottom, (20-CV)Silver Aluminum Crimp Cap, 8mm hole (20-AC-CBT3)20mm Molded Blue Chlorobutyl/Gray PTFE125
20-CVST3-CP20mL Clear Headspace Crimp Vial, Beveled Edge, Round Bottom (20-CV)Silver Aluminum Crimp Cap, 8mm hole (20-AC-ST3)20mm Blue Silicone/ Natural PTFE125


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