Function and Applications
Rubber stopper to DIN 12871 with 1 hole 15 mm.              
Equipment and technical data

of elastic natural rubber
good resistance opposite acids and bases
color: red
lower diameter: 31 mm
upper diameter: 38 mm
height: 35 mm
diameter of the hole: 15 mm
fitting for:

suction flasks 250, 500 ml
devices with standardised conical socket SB 34,5