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Customized German WEPO Rotating seal high speed PTFE food grade
sealing ring pan plug seal
1 Product features of Rotating seal
Rotary oil seals are used to seal rotating machinery components to
prevent leakage of internal media or to prevent invasion of
external dirt . The choice of seal type depends on operating
parameters such as operating medium , temperature , circumferential
velocity , pressure , and ambient air conditions .
The rotary oil seal consists of a rubber assembly , a reinforced
metal frame and a self-tightening spring .
The outer layer of rotary oil seal can be elastic rubber or metal ,
giving consideration to static sealing and fixing in the hole . The
metal skeleton provides the stability necessary for rotating oil
seals, while the spring exerts radial force against the axial
surface of the seal lip through its own self-tightening force .
Dust lip can also be used to protect against outside dirt and dust
invasion .
2 Type of rotary seal of Rotating seal
According to the structural form , we can divide it into three
basic types . WA type, skeleton rubber , with reliable sealing
performance of the outer edge :WB type, exposed metal skeleton ,
installed in the hole stable and accurate positioning ; WC type,
outer ring metal skeleton side with a sub-shell reinforcement of
the combined oil seal with metal inserts , strong stiffness ,
suitable for harsh working conditions and difficult to install
occasions .
3 Scope of application of Rotating seal
Rotary oil seal is mainly used for rotary shaft end seal , such as
shaft, hub and axle in the following industries :
- Drive technology , such as transmission , motor and internal
combustion engine .
- pump .
- Components in agricultural machinery and construction machinery
exposed to extreme oil pollution to extend maintenance cycle and
ensure service life .
- Household and industrial cleaning machines (white goods) . The
oil seal material shall be resistant to high temperature and
compatible with water and soapy water .
- The wind industry , shipyards and rolling mills in particular
need large rotary oil seals .
4 requirements of Rotating seal
The main purpose of rotary oil seal is to ensure the reliability
and sealing function of the seal . At the same time, in order to
minimize heat generated in the area around the seal and thus
minimize power losses, minor mechanical effects (such as shaft
friction) should also be reduced. In addition , rotary oil seals
should be simple in design and easy to install and remove .
Materials | Hardness(SH-A) | velocity(m/s) | Temperature( ℃ ) |
NBR | 70 | 6 | -40/+100 |
NBR | 70 | 12 | -40/+100 |
NBR | 70 | 12 | -40/+100 |
FKM | 80 | 35 | -30/+200 |
FKM | 80 | 35 | -30/+200 |
NBR | 80 | 12 | -40/+100 |
NBR | 80 | 12 | -40/+100 |
FKM | 80 | 35 | -30/+170 |
FKM | 80 | 35 | -30/+170 |