A seal adapted to seal an end of a fluid chamber which supplies fluid to a roll, includes at least one supporting wall and an upper concave surface on the at least one supporting wall and adapted to engage an outer surface of the roll. First and second, sloping, upper supporting surfaces are formed at opposite ends of the upper concave surface for receiving an end of a doctor/sealing blade thereon. Four flexible, resilient upstanding wings are provided along side edges of the first and second upper supporting surfaces for providing a sealing engagement with the doctor/sealing blades, even when the doctor/sealing blades bow outwardly away from the first and second upper supporting surfaces.