Used on staples and pfeifer simplex stainless steel strainer 1181. 6.185" center hole diameter gasket, cover AS568-438 size, material per mil-spec slash 2 hardness
Used on variable flow control valve series 2f1c. o-ring fpm (S5) reference data literature: denison hydraulics publication S5-ml-4050-a, sheet 4, item 9