Graphite and UHMW Sealing Strips

Sealing Strips for Suction Roll

Uses of sealing strips on vacuum rollers: In the paper making industry, sealing strips are mainly used on vacuum rollers. The sealing strips will fit tightly against the high speed rotating vacuum rollers, forming an effective seal with the inner wall of the roller shell, thereby forming a closed vacuum area inside the roller body. The vacuum roller then uses the internal vacuum suction force to absorb the paper web and dehydrate it.

What is a Graphite Sealing Strip?

Graphite sealing strips are a self lubricating sealing material made of natural or high purity graphite. They are black and soft in texture. These sealing strips are usually used on vacuum rollers and form a seal with the inner wall of the rotating roller body.

Advantages of Graphite Sealing Strips

• Excellent self lubrication: As the core advantage of graphite sealing strips, their layered molecular structure gives them an extremely low friction coefficient. They can achieve self lubrication without adding oil and with a small amount of spray water, making them suitable for scenes with high cleanliness.

• Strong high temperature resistance: Graphite material has excellent high temperature resistance and is very stable in the working environment of the vacuum roller and will not melt due to high temperature.

• Good chemical stability: It has excellent corrosion resistance to most acids, alkalis and other solvents, and can adapt to the environment of various chemical additives in papermaking.

• Compressibility and adaptability: It is soft in texture and can better fit the roller surface, compensate for minor unevenness of the roller body, and form a more uniform seal.

What is a UHMW Sealing Strips?

UHMW sealing strips is made of ultra high molecular weight polyethylene, it has good impact resistance and wear resistance and can be used in situations where wear resistance, impact resistance and cost-effectiveness are highly required.

Advantages of UHMW Sealing Strips

• Strong wear resistance: The sealing strip has excellent wear resistance and long service life, which greatly reduces the frequency of downtime and replacement and reduces maintenance costs.

• High cost performance: The sealing strip is cheaper than graphite sealing strips.

• Low friction coefficient: It has less wear on the roller surface, protects core equipment and extends the life of the vacuum roller.