Herbert Hanchen Gmbh & Co. Kg

Herbert Hanchen Kg

Hans-Dieter Fabrowsky

Herbert Busse

A low-friction seal comprising a quasi dimensionally stable sealing ring () that is accommodated with radial and axial clearance in a groove () of one of two surface, whereby said surfaces are sealed off from each other and can move in a relative position to each other, and the peripheral section of the sealing ring protruding from the groove () is placed opposite the other surface that is to be sealed. Means are provided between the side wall () of the groove on the side of the pressure-chamber and the sealing ring () in order to prevent pressure from spreading to the bottom () of the groove, whereby radial deformation of the sealing ring in the direction of the surface that is to be sealed is avoided.

Low-friction seal

A low-friction seal having a sealing ring seated in a groove formed by two relatively displaceable surfaces which are to be sealed, the ring resting by its periphery projecting from the groove against the surface to be sealed with a sliding fit, the sealing ring made of a dimensionally stable material and seated with axial and radial play in the groove, and means for pressure propagation between the groove sidewall closer to the pressure chamber and the sealing ring to the groove bottom using spacer means, and an axially projecting circumferential sealing ring provided between the groove sidewall away from the pressure chamber and the sealing ring, the active area of the sealing rim exceeding that of the spacer means between the sealing ring and the opposite groove sidewall.

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Neuhausen, Germany

Hans-Dieter Fabrowsky