MiniBrew® Red 4" Buna-N Lid Gasket 🧼

Custom-made to fit MiniBrew 4" threaded fermenter lids.

This food-grade red Buna-N gasket is purpose-built for MiniBrew® 4" threaded lids. It covers more sealing surface than the older red O-ring and is designed to stay in place while you thread the lid on—no slipping, no frustration.

Why you’ll want it ✅

• Made for MiniBrew® 4" threaded lids (perfect fit)

• More surface contact than the previous red O-ring

• Won’t fall out during installation

• Easy to clean and reuse

Compatibility

• Standard equipment on all fermenters that use the 4" threaded lid

• If your model uses the red O-ring, you can use either the O-ring or this 4" Buna-N gasket