DURAN® hollow hexagonal stopper, flat, DG ground, NS 7/16

DURAN® hollow hexagonal plugs, flat, DG ground, NS 7/16 DURAN® hollow hexagonal plugs are used to seal laboratory equipment such as volumetric flasks, mixing cylinders, ground flasks, etc. DURAN® hexagonal hollow plugs are available in 2 standard variants - pointed - flat sizes analogous to DURAN® conical ground joints. Grinding quality: DG = Diamond Ground Special features and advantages: Flat Diamond ground Hollow glass stopper Application: Closure of vessels with standard ground joints