Preconditioned silicone rubber septa, 3.81mm (0.15 in.) thick Average life: 100 injections with a 26s gauge needle Maximum operating temperature: 200°C 12 per package High Temperature Septa for operating temperatures up to 212° Preconditioned PTFE/silicone rubber, 3.175mm (0.125 inch) thick Average Life: 100 injections with a 26s gauge needle Maximum operating temperature is 212° 12 per package