Sealand/Dometic Teflon Bowl Seal Kit with holes. Will fit all Traveler foot flush toilets and 510 / 910 models with drain holes (not for model 310).  Also used in early VacuFlush Toilets with foot flush lever.

SeaLand / Dometic Bowl Seals should be replaced every 3 to 4 years of normal use.  Replacement instructions are included with the kit.