Designed for aseptic fluid transfer, sampling or sealing of high purity fluids and sensitive biologicals in pharmaceutical and laboratory applications, these systems features a platinum-cured silicone insert, with or without silicone tubing and a polypropylene cap that fits bottles or carboys with 53-mm, 83-mm or 120-mm closures. All components can be autoclaved at 15 PSI and 250 deg F (121 deg C) for 20 minutes.