The use of this seal is limited by the rotating speed. At present, it is used at up to about 5 m/s.
Seals with an integrated track
This type of seal has its own friction track.
Its main advantages are:
-reduces the need to grind the shaft,
-treatment of only one part,
-no shaft wear,
– protection of the lip in storage and handling,
– in a bearing, it can serve as a supporting element until it is fitted in the unit.
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Related products
Pistons for automatic gearboxes
Consists of only one piece of stamped steel on to which are bonded 2 sealing lips.
In an automatic gearbox, the setting in motion and the changing of gears are done by clutches on which pistons, moved by oil pressure, act.
Up to the present, these pistons were in moulded aluminium alloy or steel. The sealing for aluminium pistons was done by elastomer seals of various shapes fitted into the grooves or, for steel pistons, kept in position by outer rings.
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Moulded lip seals
A moulded lip guarantees a better geometrical fit of the sealing lip.
A moulded lip guarantees a better geometrical fit of the sealing lip by eliminating the machining tolerances on:
– the lip angle on the fluid side,
– the distance between the edge of the lip and the axis of the spring,
– the length of the lip (i.e. the distance between the fixing rim and the sealing edge).
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Ridged seals
The efficiency of the ridge increases with its size.
The efficiency of the ridge increases with its size.
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Covers
Needs to be fitted to ensure the closure of the crankcase with a perfect seal.
Instead of the metal plate, Paulstra offers a rubberised cover which has the following advantages:
– only a simple shape needs to be machined in the crankcase.
– only one part needs to be fitted to ensure the closure of the crankcase with a perfect seal.