About Constrc
For 43 years, one rule remains unbroken: We only produce high quality oil seals.
Every day, we test materials, measure tolerances, verify pressure limits, and refine processes—
so your equipment runs longer, and you sleep better.
Condition of Application for cassette oil seals
Material: NBR Black
HNBR Black (low temperature resistance)
FKM Brown (high temperature resistance)
Temperature: NBR max 80°C
HNBR max 90°C
FKM max 100°C
Pressure: 0.5bar max
Linear speed: NBR maximum 6m/s
HNBR maximum 7m/s
FKM maximum 9m/s
Advantages of cassette seals :
The axial surface in contact with the oil seal does not need to be hardened by heat treatment or need to be ground
Axial surfaces do not need to be processed again when repairing and replacing oil seals
It is particularly suitable for working environments where the contaminants are severe and the radial and axial movements are complex. The application scenario is as follows:
Agricultural Machinery: Tractors, Spreaders, Seeders, Punching Machines, Field Water Sprayers,
Combine harvester, threshing machine, cultivator, power cultivator, fertilizer applicator.
Construction machinery: road rollers, excavators, forklifts, mixers.
Commercial vehicles: trucks, buses, trailers, special vehicles.
Independent selection, please consult a professional personnel
