La Pha Pack 08 15 1449 8mm Combination Seal: PP Screw Cap, black, centre hole, 8-425 thread; Silicone white/PTFE red, 45° shore A, 1.3mm, slitted Silicone/PTFE Seal• The special, slitted liner for VWR (Merck®)/Hitachi is only available unassembled, as the diameter with