WRS standard compound SBR grommets. Excellent impact and very good abrasion resistance. Good electrical resistivity and oxidation resistance. Fair tear, weather and ozone resistance. Poor oil and flame resistance. Rubber grommets are typically used to protect wire, hose, pipe or other objects passing through a panel hole. They are also commonly used as vibration dampers, finishing components and even spacers. When sized correctly, rubber grommets easily snap into your pre-drilled panel hole. Rubber grommets work well in plastic, metal or other substrates.