Flat flange sealing ring, DURAN®, DN100,, Silicone, 5 unit(s)Flat flange sealing ring, DURAN, DN100,, Silicone Material: silicone (VMQ). Autoclavable: yes. For tight sealing of DURAN flat flange vessels with groove indentation. Flat flange vessels are large volume reaction vials consisting of a lower part with a groove in the flat flange and a lid. Both parts are held together with the help of a separately available clamping ring. The silicone sealing ring serves to seal and prevent jamming of the ground