Replacement Rubber O-Ring for Scaler Unit Water Bottle

Replacement black rubber O-ring to replace the sealing ring on the bottle nipple for dental scaler units. The O-ring has a 12mm outer diameter and 8mm internal diameter. O-rings should be replaced once the current ring shows signs of wear / damage to avoid issues with water supply and airlocks. To prevent water damage to the O-ring and prolong it’s life, you can apply a small amount of alcohol-free lubricant by rubbing it around the seal before use.