🔒 Seal your brew like a pro—don’t let your fermentation miss a beat!
This Size 7 rubber stopper is pre-drilled to fit airlocks and designed for 5 to 6.5 gallon carboys, providing a durable, airtight seal essential for fermentation or laboratory applications.
R**.
Fits 3 and 5 gallon carboy
Fits both 3 and 5 gallon glass carboy. No problems so far.
Z**D
Smells strongly of rubber. Other brewers have complained that ...
Smells strongly of rubber. Other brewers have complained that the particular brand that the sent me, Fermenthaus, can impart a strong rubber smell to your brew. Returning so I don't have to find out.
S**A
Sure is a rubber stopper! Does rubber stopper things ...
Sure is a rubber stopper! Does rubber stopper things!
A**R
Four Stars
ok
W**B
Great cable seal
Rubber stopper worked as planned for my birdbath pump cable seal.
B**R
Plug 'n play
Plugs right in, holds my 3-piece airlock just fine.
L**R
Five Stars
Worked good
J**E
Five Stars
Quality is good, works as advertised.
Trustpilot
2 weeks ago
1 week ago
