Outlaw Racing Super Seal Air Filter Made In USA Arctic Cat 250, 300, 400, 500, Bearcat 454 2x4 Superseal greaseless filters make the chore of servicing airfilters a breeze . Superseal neoprene gasket base seals perfectly even in the most extreme conditions without the hassle of messy grease . Extra wide sealing ring for air tight seal. Constructed with bonded dual layer foam.