Rubber Grommet – Airlock Seal for Fermenters & Stills

- Food-grade rubber – Safe for fermentation
- Creates airtight seal – Prevents contamination
- Works with standard airlocks – Universal fit (verify hole size)
- Reusable – Works for multiple batches
- Durable – Won't degrade with repeated use
- Simple installation – Push into drilled hole, insert airlock stem

Material: Food-grade rubber
Color: Typically black or translucent
Size: Standard airlock grommet (verify hole diameter compatibility)
Temperature Range: Safe for fermentation temperatures (5–30°C typical)
Reusable: Yes
Replacement Frequency: As needed (if cracked or no longer seals)

- Sealing airlocks to fermentation buckets
- Sealing airlocks to glass carboys
- Sealing airlocks to still components
- Any fermentation vessel with drilled lid

Works with:
- Standard airlocks (3-piece, S-shaped)
- Any fermentation vessel with a drilled lid
- Bucket fermenters
- Glass carboy fermenters
- Still heads/lids with airlock ports

Pairs with:
- 3-Piece Airlock (essential pairing)
- Fermentation vessels (buckets, carboys)
- Any fermentation setup

Q: What size hole do I need to drill?
A: Check your airlock size. Standard airlocks fit 6–10mm holes.
Measure your airlock stem diameter before drilling.

Q: Is this food-grade?
A: Yes. Food-grade rubber, safe for fermentation.

Q: Can I reuse it?
A: Yes. Wash after each use, dry, and store for next batch.

Q: What if it doesn't seal?
A: Grommet may have cracked or compressed. Replace with new one.

Q: Does it fit all airlocks?
A: Most standard airlocks, but verify the hole size matches your airlock
stem diameter.

CLEANING:

When Needed:
- If grommet becomes dirty or needs cleaning, rinse with warm water and air dry

Replacement:

When to Replace:
- If cracked or damaged
- If no longer creates an airtight seal
- If has become brittle or compressed

Storage:
- Keep dry between uses
- Store away from sunlight
- Room temperature storage fine