20mm Crimp Top Aluminum Caps Wholesale Price
The cap material is a metal aluminum cover. The design with a 9.5mm hole in the center of the cover can be used for headspace analysis. Standard GC and HPLC sample bottles can be used for autosampler and sample storage. There are two designs round bottom and flat bottom.
The crimp cover of the vials is made of aluminum for crimping and sealing; plastic (polyethylene, polypropylene, or phenolic resin) for non-crimping and sealing. The cap gasket is a septum material that is pierced by a syringe needle to extract a sample from the vial. The cap liner sheet has various configurations and is also made of various materials.
Crimp Caps squeeze the septum between the rim of the glass vial and the crimped aluminum cap. This forms an excellent seal preventing evaporation. The crimp cap vial requires crimping tools to carry out the sealing process.
*Introduction:
Suitable: 20mm Crimp Top Headspace Vials
Caps Material: Silver Aluminum
Septa Material: PTFE/Silicone; PTFE/butyl
Septa Size: 20*3mm
Cap Features: 8/9.5mm Centre Hole
Color: Metal Silver