11mm Snap Cap, Blue Polyethylene with Blue PTFE/White Silicone Septa, Pre-Slit

Alternative to:
La-Pha-Pack: 11 15 1269, Chromacol: 11-PSN(B)-ST1X , National: C4011-55B, Fisher: 11894920, VWR: 548-3210., Waters: 186000304