Blue PTFE/White Silicone Septa, 8mm x 0.9mm, Pre-Slit, for 8-425 Screw Caps (for Merck Hitachi)

Alternative to:
La-Pha-Pack: 08 02 0039, Chromacol: 8-ST14X (alt.), National: C4013-32, Agilent: 5183-4435, Fisher: 11841653, VWR: 548-0026, Waters: WAT058876