s-8091 non-asbestos gasket material ideal for oem and aftermarket coolant and oil applications, s-8091 is a controlled-swell non-asbestos gasket material. s8091 syntheseal® is a latent cure styrene butadiene (sbr binder) bound product reinforced with cellulose fiber. intended for sealing oil, fuel, and low-pressure steam applications. specifications include a short duration maximum temperature up to 180°c (350°f). astm f-104: