1Part Number: Bowl leak seal kit replace part number are 385311462, 385316140 for reference. Please double check the part number of your item to ensure perfect fit. 2Strong Compatibility: Seal kit is fit for Dometic, for Sealand, for VacuFlush and travel trailer Rv Camper toilet, for 506+, 510+, 511 H, 547+, 548+, 706, 709, 748, 749, 806, 808, etc. 3Main Function: Upgraded design provide more complete sealing performance, easily solve the odor, water leakage problems, bringing you more convenience. 4High Performance: Rv toilet flush seals are made of durable rubber material that is soft, durable, friction resistant, aging resistant, and not easy to damage. 5Perfect Replacement: Designed and manufactured according to the original specifications to ensure that the form and function match the original equipment.