J.G. Finneran 11 mm Snap Top Cap™ with PTFE/Butyl Rubber Se Snap Top Cap™, 11 mm, Blue, LDPE, PTFE/Butyl Rubber Septa, Open Top Type, For 12 x 32 mm Snap Seal™ and Snap Ring™ Vials, Large Opening Top Provides Greater Target Area For Needle Penetration. View All