When replacing O-rings for carboy fermenters ensure you purchase the correct O-ring.  O-rings come in different sizes to fit various carboys:

AMPI - 10mm thick with a 245mm diameter

Atlas - 7mm thick with a 270mm diameter

BMW/Rheem - 10mm thick with a 190mm diameter

Davis - 8mm thick with a 245mm diameter

VB - 8 mm thick with a 220mm diameter

* Make sure you measure the O-ring you want to replace so your new O-ring is a correct fit!

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Fermenter Parts

Air Lock - Vintage

One piece Sbend Senior airlock/bubbler.

Price: $ 5.25

Airlock - Senior

Three piece tapered shank Senior airlock/bubbler.

Price: $ 4.99

Ampi Carboy O'Ring

Lid O'Ring: 10mm thick, 245mm diameter. Suits 15lt, 30lt, ...

Price: $ 4.99

Barrel Tap & Nut

Medium size thread fits standard fermenter 3/4" BSP thread

Price: $ 7.99

Demijohn Bored Bung (5&10 litre)

Bored Demijohn bung. 24-38mm x 50mm. Suits 5 & 10l demijohn.

Price: $ 6.99

EZ Filter Snap Tap (With Backing Nut)

Suits EZ Filter system or 19.0mm bored hole.

Price: $ 14.99

Snap Tap 20mm Red

Easy to use snap tap with cam lever lock. 3/4" BSP thread

Price: $ 10.99
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