Major retailers like Lowe's and Home Depot stock them in the hardware or electrical aisles.
If you can tell me the you're filling or the material thickness , I can find the exact size for you. where can i buy rubber grommets
High Temp Silicone Plug Solid Rubber Stopper Hole Plugs for Powder Coating Plating Waterproof Sealing Plugs Bed Bath & Beyond Go to product viewer dialog for this item. Major retailers like Lowe's and Home Depot stock
💡 If you need a solid piece but can only find standard ones, look for hole plugs or blanking bungs —they are functionally the same as a solid grommet. where can i buy rubber grommets