Rubber Stopper, #9, solid

You will always have the right size rubber stopper on hand with this 2 lb package of assorted solid, 1-hole and 2-hole stoppers ranging in size from #00 to #8. You get 60 stoppers total.

This 1000ml PYREX narrow mouth Erlenmeyer flask with a heavy duty rim is made from low expansion, Type 1, Class A borosilicate glass that can be heated directly in an open flame.

This 2000ml PYREX narrow mouth Erlenmeyer flask with a heavy duty rim is made from low expansion, Type 1, Class A borosilicate glass that can be heated directly in an open flame.

These #10 rubber stoppers are 42-50 mm diameter with no holes. #10 rubber stoppers fit 2000 ml Erlenmeyer flasks and many thermos vacuum bottles.

These #8 rubber stoppers are 33-41 mm diameter.

These large 1000 ml Home Science Tools Erlenmeyer flasks are made of high-quality borosilicate glass that can be heated directly in an open flame.

These #9 rubber stoppers are 37-45 mm diameter with one 5 mm diameter hole.

These 2000 ml Home Science Tools Erlenmeyer flasks are made of high-quality borosilicate glass that can be heated directly in an open flame.

These # 6.5 rubber stoppers are 27-34 mm diameter.

This large brush is used to clean larger graduated cylinders, bottles, and flasks.