Product Description 1955CT-000. Protect the flush valve or toilet tank with these check hinges that prevent the seat from going 11° beyond vertical. From the Manufacturer About Bemis – Bemis toilet seats bring quality, innovation and style to residential and commercial properties worldwide. Bemis toilet seats provide a wide variety of designs to easily integrate into any bathroom. The needs of residential and commercial customers are at the forefront of design with unmatched features and benefits that make everyday lives easier. Bemis Manufacturing Company is the world’s largest manufacturer of toilet seats. Founded in 1901, and in the fourth generation of family ownership, Bemis has grown from a maker of furniture and wooden wagons to an international enterprise with manufacturing and warehousing facilities worldwide. In addition to manufacturing toilet seats, Bemis is one of North America’s top non-automotive producers of contract plastic injection-molded components. With a continued commitment to the worldwide community, Bemis Manufacturing Company strives to set the standard for ecological responsibility, conservation and preservation.