Dowty Seals Limited

Clive John Stanley

A shaft seal comprises a resilient sealing ring 1 with a peripheral sealing lip which is deflected axially in use so as to bear radially against a shaft. The sealing contact area 2 on the sealing lip is between predetermined limits, each defined by a change in angle of the surface of the sealing lip so that a substantial contact stress is maintained across the whole sealing contact area 2 in use. The seal can be used in an assembly including a carrier 5, 5' in which the seal is mounted. The seal can be used cooperatively with another shaft seal to prevent contaminants passing along the shaft.

Gas purge lip seal and seal assembly

A seal for use between two relatively-rotatable parts includes a sealing member of fluorine resin having a side which terminates in an edge and which has a plurality of recesses adjacent to and disposed about the edge. Each groove is in the form of a quadrilateral with two opposite sides substantially parallel to the edge, one being longer than, and closer to the edge than, the other, and each of the other two sides being inclined at an acute angle to the longer of the two parallel sides. In use the edge and at least part of the side adjacent the edge are engageable with one of the two relatively-rotatable parts.

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Twekesbury, United Kingdom

Clive John Stanley