Microsolv Headspace Crimp Cap, silver, aluminium, 8mm center hole, pressure-relief cap, with grey Butyl Rubber/partially laminated PTFE Septa, Pharma-

Caps, Headspace, Crimp Top, with Grey Butyl Rubber / Partially Laminated PTFE Septa, fitted in Aluminum, Silver Pressure Relief Caps with 8mm center holes. Pharma-Fix. For use with 20mm Crimp Top Headspace Vials. MicroSolv Brand