Glass Vial Teflon Cap found in: EC Vial Series, Open Top Sample Vials In Lab File, E-C Vials w / Rubber Lined Caps, Clear, 8 ml, Vials, Teflon Lined Cap,.. closures have Teflon faced 14B white styrene-butadiene rubber liners and the open-top closures have a Teflon faced silicone septa assembled in …