Description: Thermogreen® Injector Septa are extremely low bleed over a wide range of inlet temperatures from 100 to 350 °C. Retrieving Pack WHEATON® MicroLiter Septa for 16 mm Screw Caps, DWK Life Sciences Supplier: DWK Life Sciences (KIMBLE) Description: These septa are used for 16 mm screw thread vial screw caps.