Material: Butyl Rubber
Size: 20mm/0.787in
Quantity: 100
Weight: 2g each
Application:
1e stoppers can be used to make self-healing injection ports in Mason jar lids or medicine bottles.
2. Mainly used for mushroom growing and liquid culture production.
3 with hypodermic needles to inject cultures, therefore eliminating the need to remove the lids on your culture jars.
4 fit 13 mm (0.5118’’) diameter opening. They are 3/4” across the top, and 5/16” top to bottom. Simply use a 7/16 to 1/2 inch drill bit and drill a hole in metal or plastic jar lid and the stoppers pop right in place.