This EVA (Ethylene-Vinyl Acetate) gasket will notably allow you to ensure the watertightness of your speakers' body, in order to obtain a perfect acoustic insulation. In addition, this material is highly resistant and helps absorb vibrations.
This Jantzen Audio Bass Reflex speaker vent has an internal diameter of 25mm. It will be perfect for any small speaker. In the shape of a pavilion, its flared opening prevents harmful resonance noises.