DURAN® hollow hexagonal stopper, short ground, flat, ground, NS 19/17

DURAN® hollow hexagonal plug, short ground, flat, NS 19/17 DURAN® hollow hexagonal plug as short ground variant suitable for DURAN® short ground sleeves. Ground joint quality: Ground. Special features and advantages: Short ground flat Ground hollow glass stopper Application: Closure of vessels with standard ground joints, used for closing short ground joint sleeves