The disclosure relates to a composting device including a housing defining an interior with an access opening providing access to the interior, a composter bin located within the interior and in communication with the access opening, and a cover slidably mounted to the housing and slidable along a sliding path between opened and closed conditions to selectively open and close the access opening. An angled seal assembly is provided on the cover and housing. Both a sealing surface and a seal are angled relative to a sliding path such that the space between the seal and the sealing surface decreases as the cover is slid from the opened to the closed condition.
