Felt seal - seals for spindles and bearings for dust-proof design
It is filled with felt ring in the shell groove to plug the leakage gap and achieve the purpose of sealing. Felt has natural elasticity, is spongy holes, can store lubricating oil and dust. When the shaft rotates, the felt will scratch the lubricating oil from the shaft repeatedly and lubricate itself. Generally used in low speed, normal temperature, normal pressure motor, gear box and other machinery, the temperature does not exceed 90C, for sealing grease, oil, viscosity
oil seal seal - often used to prevent the leakage of bearing oil
The oil seal is also a self-tightening lip seal. In the free state, the inner diameter of the oil seal is smaller than the axial diameter, that is, there is a certain amount of interference. After the oil seal is installed on the shaft, the pressure of the cutting edge and the contraction force of the self-tightening spring will produce a certain radial holding force on the sealing shaft to block the leakage gap and achieve the purpose of sealing. Oil seal is divided into skeleton and no skeleton, spring and spring. The oil seal installation position is small, the axial size is small, the machine structure is simple, the size is compact, the sealing performance is good, the service life is long, the assembly and disassembly is easy, the maintenance is convenient, the cost
3, flange connection gasket seal - used for pipeline and furnace sealing
Flange connecting gasket seals are gaskets of different types placed between the sealing faces of two connecting pieces (such as flanges).
Such as nonmetallic, nonmetallic and metal composite gasket or metal gasket, and then screw threads or bolts, tightening force to make gasket production
Generate elastic and plastic deformation, fill the uneven sealing surface, to achieve the purpose of sealing
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