Pre-slit White PTFE/Red Silicone Septa, 11mm Crimp-top Aluminum Cap, 5.5mm Centre Hole Back Catalog number: PL30A-016 Availability: In the manufacturer's stock Price on request - + Recommended 5540-11G 11mm Green Poly Crimp™ Seal, PTFE/Butyl Rubber Lined [Patented] 858,00 Kč 5160-08 8mm Silver Seal, PTFE/Silicone/ PTFE Lined 686,00 Kč 5560-11B 11mm Blue Poly Crimp™ Seal, PTFE/Silicone/PTFE Lined [Patented] 695,00 Kč