Description

BLACK RUBBER STOPPER – #13.5 – 2 HOLE

The black rubber stopper is used in chemical laboratories in combination with flasks and test tubes. It is made from neoprene and pure gum which makes it chemical resistance. The stoppers are machine fabricated. To prevent liquid from leaking or escaping a container, the rubber stopper should fit tightly to the container's opening. 

Size: #13.5 – 2 Hole
Top Side: 2 31/32″ – 75 mm
Bottom Side: 2 7/16″ – 62 mm
Length: 35 mm
Diameter: 5 mm