Sealing strip for a paper, cardboard or tissue machine made from a plurality of materials

A sealing strip suitable for a sealing device for sealing a positive or negative pressure zone of a suction or blower roller of a machine for processing and/or producing web material, the sealing strip comprising:

• a front end side, a rear end side, and an upper side extending between said front and rear end sides, said upper side being a sealing face and having a lubricant channel being a cutout formed in the sealing strip;
• a front wall formed at a level of said lubricant channel between said front end side and said lubricant channel;
• a rear wall forming said sealing face and having a greater wall thickness than said front wall being formed between said lubricant channel and said rear end side;
• wherein, during an intended use of the sealing strip, said sealing face is set against an inner side of a roller shell of the suction or blower roller in order to seal the positive or negative pressure zone, and lubricant is introduced into an inlet gap between said sealing face and the inner side of the roller shell by way of said lubricant channel, and wherein, during a rotational movement of the roller shell, the roller shell runs onto the sealing strip at said front end side and runs away from the sealing strip on said rear end side;
• a first material section of the sealing strip being formed of a first material and providing said rear wall in a region of said sealing face and a second material section of the sealing strip being formed of a second material and providing said front wall at least in sections;
• and
• said first and second material sections differing from one another in terms of at least one physical property selected from the group consisting of a modulus of elasticity, an abrasion resistance, a hardness and a brittleness;
• and
• said first material and said second material are adapted to one another such that, in a friction pairing with the material of the inner side of the roller shell and in sliding friction, said first material has a greater abrasion resistance than said second material.