Material These toilet hinge close coupling bolts and nuts are made from durable materials to provide longlasting performance and reliability. Seal The conical donutshaped washer is designed to create a precise seal between the toilet pan and cistern. Its soft rubber construction helps prevent leaks and supports proper toilet operation. Easy Installation The washer design is conical to enable easy installation between the pan and cistern. Place it between the pan and cistern and tighten to form a tight seal without the need for complex adjustments. Compatibility These close coupling bolts and nuts fit a wide range of toilet models and standard closecoupled toilets. They are a practical replacement or part that works with most toilets. Use scenarios Replacing a worn or leaking cistern seal on a standard closecoupled toilet to restore a reliable seal. Repairing a loose or leaking pantocistern connection during bathroom maintenance or renovation. Upgrading an existing toilet with a dependable seal and hardware during part replacement to improve overall performance.