Topog-E® molded rubber gaskets are specifically formulated to meet and exceed the extreme demands of the steam boiler market and deliver industry standard performance. Topog-E® Series 180 gaskets have been refined through a series of over 600 research formulation tests to ensure that they are able to meet the exacting performance standards of the steam boiler industry.Topog-E® Series 180 gasket advantages: Conform to the topography of the mating surfaces Withstand a boiler’s full, continuous and cycling operating pressures Withstand continuous exposure to water treatment chemicals Withstand continuous exposure to ion and oxygen attack in hot air Prevent all leakage Replace easily, without chiseling or buffing