Red PTFE/White Silicone/Red PTFE Septa, 8mm x 1mm, for 8-425 Thread Caps

Alternative to:
La-Pha-Pack: 08 02 0005, Chromacol: 8-TST1 + 8-TST11 (alt.), National: C4013-40, Agilent: 5183-4436, Fisher: 11828961, VWR: 548-0312