CM Science

CM ScienceCM ScienceCM Science
  • Home
  • HPLC/GC Vials
    • 8 mm Shell Vials
    • 8-425 Vials
    • 9 mm Vials
    • 10-425 Vials
    • 11 mm Crimp Vials
    • 11 mm Snap/Crimp Vials
    • 11 mm Snap Seal Vials
    • Versa Vials
    • 12x32 mm Shell Vials
    • 13-425 Screw Vials
    • 13-425 Snap Vials
    • 15x45 mm Shell Vials
  • Headspace Vials
    • 18 mm Flat Bottom
    • 18 mm Round Bottom
    • 20 mm Crimp Flat Bottom
    • 20 mm Crimp RB and SPME
  • GC Injection Port Septa
  • More
    • Home
    • HPLC/GC Vials
      • 8 mm Shell Vials
      • 8-425 Vials
      • 9 mm Vials
      • 10-425 Vials
      • 11 mm Crimp Vials
      • 11 mm Snap/Crimp Vials
      • 11 mm Snap Seal Vials
      • Versa Vials
      • 12x32 mm Shell Vials
      • 13-425 Screw Vials
      • 13-425 Snap Vials
      • 15x45 mm Shell Vials
    • Headspace Vials
      • 18 mm Flat Bottom
      • 18 mm Round Bottom
      • 20 mm Crimp Flat Bottom
      • 20 mm Crimp RB and SPME
    • GC Injection Port Septa

CM Science

CM ScienceCM ScienceCM Science
  • Home
  • HPLC/GC Vials
    • 8 mm Shell Vials
    • 8-425 Vials
    • 9 mm Vials
    • 10-425 Vials
    • 11 mm Crimp Vials
    • 11 mm Snap/Crimp Vials
    • 11 mm Snap Seal Vials
    • Versa Vials
    • 12x32 mm Shell Vials
    • 13-425 Screw Vials
    • 13-425 Snap Vials
    • 15x45 mm Shell Vials
  • Headspace Vials
    • 18 mm Flat Bottom
    • 18 mm Round Bottom
    • 20 mm Crimp Flat Bottom
    • 20 mm Crimp RB and SPME
  • GC Injection Port Septa

20 mm Crimp Radius Bottom Headspace Vials

 CM Science offers a variety of headspace vials to fit your autosampler.  The vials on this page are standard headspace vials.  They are 20 mm Crimp top vials with rounded bottoms.  These types of vials fit Perkin Elmer, Tekmar, L.E.A.P. and Varian autosamplers. 

VIALS

CM10732  20 ml, 20 mm Clear Standard Finish Crimp Top, Long Neck Vials, 22.6x75.5 mm (for CTC PAL), Qty 1000  $227.00

CM10732D  20 ml, 20 mm Clear Standard Finish Crimp Top, Long Neck Vials, 22.6x75.5 mm (for CTC PAL), Deactivated, Qty 1000  $1022.00

CM10735  20 ml, 20 mm Amber Standard Finish Crimp Top, Long Neck Vials, 22.6x75.5 mm (for CTC PAL), Qty 1000  $247.00

CM10735D  20 ml, 20 mm Amber Standard Finish Crimp Top, Long Neck Vials, 22.6x75.5 mm (for CTC PAL), Deactivated, Qty 1000  $1042.00


CM10744  9.0 ml, 20 mm Clear Tapered Crimp Top Vials, 18.5x50 mm (Tekmar), Qty 1000  $280.00

CM10745  12.0 ml, 20 mm Clear Tapered Crimp Top Vials, 18.5x65 mm (Tekmar), Qty 1000  $310.00

CM10746  20.0 ml, 20 mm Clear Tapered Crimp Top Vials, 23x75 mm (Tekmar), Qty 1000  $252.00


CM10750  6.0 ml, 20 mm Clear Tapered Crimp Top Vials, 22x38 mm, Qty 1000  $198.00

CM10750D  6.0 ml, 20 mm Clear Tapered Crimp Top Vials, 22x38 mm, Deactivated, Qty 1000  $550.00

CM10753  6.0 ml, 20 mm Amber Tapered Crimp Top Vials, 22x38 mm, Qty 1000  $208.00

CM10753D  6.0 ml, 20 mm Amber Tapered Crimp Top Vials, 22x38 mm, Deactivated, Qty 1000  $560.00

CM10751  10.0 ml, 20 mm Clear Tapered Crimp Top Vials, 22.6x46 mm, Qty 1000  $204.00

CM10751D  10.0 ml, 20 mm Clear Tapered Crimp Top Vials, 22.6x46 mm, Deactivated, Qty 1000  $689.00

CM10754  10.0 ml, 20 mm Amber Tapered Crimp Top Vials, 22.6x46 mm, Qty 1000  $216.00

CM10754D  10.0 ml, 20 mm Amber Tapered Crimp Top Vials, 22.6x46 mm, Deactivated, Qty 1000  $701.00

CM10752  20.0 ml, 20 mm Clear Tapered Crimp Top Vials, 22.6x75 mm, Qty 1000  $217.00

CM10752D  20.0 ml, 20 mm Clear Tapered Crimp Top Vials, 22.6x75 mm, Deactivated, Qty 1000  $1,022.00

CM10755  20.0 ml, 20 mm Amber Tapered Crimp Top Vials, 22.6x75 mm, Qty 1000  $237.00

CM10755D  20.0 ml, 20 mm Amber Tapered Crimp Top Vials, 22.6x75 mm, Qty 1000  $1,042.00




CM31020SP-2346  10 ml SPME, 20 mm Clear Crimp Top Vials w/Thicker Lip Finish, Qty 1000  $360.42 
​CM32020SP-2375  ​20 ml SPME, 20 mm Clear Crimp Top Vials w/Thicker Lip Finish, Qty 1000  ​$360.42 

​Closures

20 mm Standard Aluminum Seals

CM15301  20 mm Silver Seal, Natural PTFE/Si, Qty 1000  $235.00
CM15451  20 mm Silver Seal, PTFE/Gray Butyl Rubber, Qty 1000  $490.00 
CM15501  20 mm Silver Seal, Pharma-Fix PTFE/Molded Gray Butyl, Qty 1000  $495.00
​CM5150UL-20  20 mm Silver Seal, 3 mm Thick Clear PTFE/Blue Silicone, Ultra Low Bleed, Qty 1000​  $473.20​​
CM5110-20  20 mm Al Seal, 10 mil PTFE, Qty 1000  $182.30  

SPME

CM15609  20 mm Crimp, Steel/Magnetic Seal, Blue PTFE/White Silicone (SPME), $580.00 per 1000 

20 mm Pressure Release Aluminum Seals

Pressure release seals are designed to open when internal pressure exceeds 3.0+/-0.5 bar. 

 CM15302  20 mm Silver Pressure Release Seal, 2.5 mm PTFE/Si, Qty 1000  $330.00 
CM15502  20 mm Silver Pressure Release Seal, PTFE/Molded Gray Butyl Pharma-Fix, Qty 1000  $675.00
CM15452  20 mm Silver Pressure Release Seal, 3 mm PTFE/Gray Butyl Septa, Qty 1000  $540.00  

20 mm Steel/Magnetic Seals

Magnetic seals are ideal for Leap Instruments or instruments utilizing magnetic transport. 

CM15453  20 mm Steel/Magnetic Seal, 8 mm Hole, 3 mm PTFE/Gray Butyl, Qty 1000  $500.00 
CM15503  20 mm Steel/Magnetic Seal, 8  mm Hole, 3 mm Pharma-Fix  PTFE/Molded Gray Butyl, Qty 1000  $950.00 
​​CM15303  20 mm Steel/Magnetic Seal, 8 mm Hole, 2.5 mm PTFE/Si, Qty 1000​  $410.00 

20 mm Magnetic BiMetal Seals (Aluminum Outer Surface/Magnetic Tin Inner Surface)

The BiMetal Seal is comprised of tin and aluminum materials. The outer surface (red or blue) is aluminum and the inner diameter is a silver tin. 

CM5150BM00-20R  20 mm Red BiMetal Seal, 0.100" PTFE/Si, Qty 1000 $575.98 
CM5150BM00-20B  20 mm Blue BiMetal Seal, 0.100" PTFE/Si, Qty 1000 $575.98 
CM5150BM18-20R  20 mm Red BiMetal Seal, 0.118" PTFE/Si, Qty 1000  $533.98 
CM5150BM18-20B  20 mm Blue BiMetal Seal, 0.118" PTFE/SI, Qty 1000  $533.98 
​​CM5150BMUL-20B  ​​20 mm Blue BiMetal Seal, 3 mm Thick Clear PTFE/Blue Si, Ultra Low Bleed, Qty 1000  ​​$538.31  

CM Science

338 Lyons Rd, Mertztown, PA 19539

+1.4848660246

Copyright © 2026 CM Science - All Rights Reserved.

Powered by

This website uses cookies.

We use cookies to analyze website traffic and optimize your website experience. By accepting our use of cookies, your data will be aggregated with all other user data.

Accept