20mm Aluminum Seals with PTFE/Silicone Septa, pack/200

20mm Aluminum Seals with PTFE/Silicone Septa. Perform microwave-heated reactions in glass vials secured by 20mm aluminum seals with 0.125-inch thick, blue PTFE / white silicone septa. Glass vials are made from heavy-wall, Type I, Class A borosilicate for its high resistance to both chemicals and thermal shock. Microwave reaction vials are designed to withstand pressures up to 300 PSI (20 bars). PTFE-coated stir bars are used to provide continuous stirring and even heating during reactions. A range of vial styles and sizes is offered for flexibility and scale-up. 0.2-0.5mL 0.5-2mL Tapered Vials 2-5mL Round Bottom Vials 10-20mL Round Bottom Vials New Packaging! Chemglass microwave vials come complete with vials, septa and stir bars packed for convenience, cleanliness and protection in white corrugated cartons with removable trays of ten vials each. For crimper and decapper tools see CG-4930. PLEASE NOTE: Stir bars and aluminum seals are supplied with complete packages but are not assembled. SEE SPECIFICATION TAB FOR COMPLETE PACKAGE DETAILS. Made in the United States.