Item # Description Case Pack
  5110-20 20mm Silver Seal, 10mil PTFE 1000 pieces View Product
  5140-20 20mm Silver Seal, 0.131″ PTFE/Gray Butyl Rubber 1000 pieces View Product
  5142-20 20mm Silver Seal, PharmaFix Molded Gray PTFE/Black Butyl Lined  100 View Product
  5150-20 20mm Silver Seal, 0.125″ PTFE/Silicone 1000 pieces View Product
  5150B-20 20mm Silver Seal, 8mm Hole, 0.125” PTFE/Blue Silicone  100 View Product
  5150HT-20 20mm Silver Seal, 3mm Tan PTFE/White Silicone, Ultra Clean, Septa for High Temperatures up to 250° C  100 View Product

Preassembled aluminum seals reduce contamination during sample preparation and save valuable time in the lab.