Short thread screw cap, 9 mm thread, with liner blue polypropylene cap, red PTFE/silicone/red PTFE septum, septum diam. x thickness 9 mm x 1.0 mm, pkg of 100 ea
Magnetic Screw Cap for Headspace Vials, 18 mm thread PTFE/silicone septum (white PTFE/tranparent blue silicone), septum thickness 1.3 mm, pkg of 100 ea