Black Rubber Stopper, #9, 1 Hole
The black rubber stopper, #9, 1 hole 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. Stoppers can be purchased per each or by the pound.
- Size: #9 – 1 Hole
- Top Side: (Inches) 1-3/4 – (mm) 45
- Bottom Side: (Inches) 1-15/32 – (mm) 37
- Length: (mm) – 25
- Diameter: (mm) – 5
- Approx. number of stoppers per pound: 10