Red BUNA-N Gasket for 4" Fermenter Lid

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