Metal seal SKF CR18259 Applied To Heavy Duty Machinery

The DF heavy-load metal seal is composed of two rectangular rubber rings and a metal ring. The contact surface between the metal ring and the rubber ring is L-shaped. The transmission force provided by the torque of the rubber ring, during the operation of the heavy-duty floating oil seal, stabilizes the operation of the floating oil seal in the seat cavity.

DF metal seal is designed for high-load equipment, often used in a variety of heavy mining equipment prone to large vibration, impact parts, such as mining equipment , conveyors,track rollors and construction machinery,and so on. It is composed of A pair of L-shaped floating seal rings and a pair of rubber rings (rubber dish springs), which are assembled in the L-shaped floating seal seat, and the principle is similar to that of DO type . Since the deformation capacity of the rubber ring is greater than that of the O-ring, it can provide a larger floating range. In addition, the L-shaped floating seal is also easy to process, and the assembly of the DF type floating oil seal is also more convenient.

Compared with the DO type, the DF type design requires less installation space and the corresponding groove shape is easier to process. However, the groove corresponding to this series of seals has higher processing accuracy requirements. Since the compression deformation of DF type rubber ring and DO type rubber ring are different, they must be installed strictly according to the specified compression size and clearance.

• The right rubber ring should be chosen to meet the specific application requirements.
• The most common rubber ring materials are NBR and silicone.