Features: Premium waste tanks seal rings crafted from rubber ensures a leak proof and strong solution, effectively preventing aging and water leakage issues for worry easy travels. Featuring general compatibility and wear resistant design, this toilet seal rings fits most models, offering long lasting performances even under frequent use and harsh conditions. Ideal for full time dwellers and adventure seekers requiring stable sanitation solution during country trips or extended camping excursions. Maintains optimal hygiene in living environments, whether parked at campgrounds or navigating bumpy terrains, with its secure fit and environmental friend component composition. Effortless tool easy installation revolutionizes bathroom maintenance, delivering fast upgrade defense against odors and contamination through accuracy engineered sealing technology. Specifications: Component : Rubber Extenal diameter: about 11cm/4.33inch Internal diameter: about 7.5cm/2.95inch replace part number: 23721, 33361 Package Includes: 1xSealing Gasket note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.