# Replacing the door sealing rubber of the Vieira MCO hammer mill

URL: https://moinhosvieira.com.br/en/replacing-the-door-seal-hammer-mill-vieira-mco/  
Updated on: 2026-11-04  
Other languages: Español: https://moinhosvieira.com.br/es/cambio-de-la-goma-de-estanqueidad-molino-vieira-mco/ · Português: https://moinhosvieira.com.br/troca-da-borracha-de-vedacao-moinho-vieira-mco/

> Product leaking from the grinding box door means the sealing rubber is worn. To replace it: remove the worn rubber, clean the surface, glue the new one with contact adhesive and let the adhesive set before grinding.

## Step by step

1. **Switch off and open the door.** With the mill switched off and the rotor stopped, open the grinding box door.
2. **Remove the worn rubber.** Scrape off the worn sealing rubber with suitable tools.
3. **Clean the door surface.** Clean the area where the new rubber will be glued thoroughly: it must be free of dust, oil and product residue.
4. **Use cleaning solvent.** Clean the new rubber and the door surface with cleaning solvent.
5. **Glue the new rubber.** Glue the new sealing rubber in place with contact adhesive.
6. **Let the adhesive set.** Wait a few hours before grinding again so that the adhesive sets.

## Original parts

Use the original Moinhos Vieira sealing rubber. When ordering, give the model shown on the mill identification plate. The hopper rubber is also part of the sealing set.

Other signs and what to do: [troubleshooting](https://moinhosvieira.com.br/en/troubleshooting-hammer-mill-vieira-mco/).