Provided is a seal (21, 121) for a depth gauge (1) of axis of revolution (Z) including a radially inner flank (213, 223) and a radially outer flank (214, 224), such that the radially inner flank (213, 223) of said seal (21, 121) has a height (h1) greater than a height (h2) of the radially outer flank (214, 224).

Provided is a seal (21, 121) for a depth gauge (1) of axis of revolution (Z) including a radially inner flank (213, 223) and a radially outer flank (214, 224), such that the radially inner flank (213, 223) of said seal (21, 121) has a height (h1) greater than a height (h2) of the radially outer flank (214, 224).

A radial shaft seal for a shaft to be sealed operating at high rotational speeds and circumferential speeds in both rotational directions has a sealing lip with a first circumferential ring and a second circumferential ring. The first circumferential ring is resting seal-tightly against the shaft to be sealed and seals the medium side. At the side of the first circumferential ring facing the air side, there are first return elements that convey leakage medium back to the medium side. The second circumferential ring is provided at the side of the first circumferential ring facing the air side and second return elements are provided at its air side. The second return elements guide medium that has passed underneath the second circumferential ring back underneath the second circumferential ring to the medium side.

A non-collapsible flexible sealing membrane (or bellows) for incorporation in a mechanical seal assembly and use in rotary shaft equipment. The sealing membrane includes a substantially radially outward extending first flange portion, which can be urged into an axially shiftable ring by a biasing mechanism. The sealing membrane further includes a substantially axially outboard extending second coaxial portion, substantially radially inward of the balance diameter of the seal. The horizontal portion is advantageously held fixed to a stub sleeve by an annular band. The angle between the vertical portion and the horizontal portion of sealing membrane enables directional control of the forces acting on stub sleeve and primary ring.

At least some embodiments a flare includes a gasket sized and shaped to prevent gas-leakage at the gas slot when pressure of gas entering the flare is below a designed minimum opening pressure that causes the flare bowl to move away from the tip housing. At least some embodiments of a flare includes a diaphragm spring coupled with the flare bowl to assist in movement of the flare bowl with respect to the tip housing to vary an opening dimension of a gas-exit slot defined by the flare bowl and the tip housing.

A radial lip seal includes a sealing lip body having a contact point defining an inner diameter of the radial lip seal, and a heelstock body defining an outer diameter and having a supporting section arranged radially inwardly relative to the outer diameter and extending along a boundary of the sealing lip body toward the contact point. The heelstock body is formed of a heelstock material that is flexible, and the heelstock material is stiffer relative to a material of the sealing lip body.

A mechanical seal having a first seal ring, which is mounted in a receptacle of a fixed part, and a second seal ring, which is mounted in a sleeve of a rotary part having a fixing portion fixed to a rotary shaft. The second seal ring extends radially inwards relative to the fixing portion of the sleeve, above an upper ending surface of the rotary shaft. The first seal ring is disposed above the second seal ring in such a way that the sliding surfaces of the first seal ring and of the second seal ring are in mutual contact. The sliding surfaces of the first seal ring and of the second seal ring have a mean diameter that is lower than an external diameter of the rotary shaft.

A mechanical seal having a first seal ring, which is mounted in a receptacle of a fixed part, and a second seal ring, which is mounted in a sleeve of a rotary part having a fixing portion fixed to a rotary shaft. The second seal ring extends radially inwards relative to the fixing portion of the sleeve, above an upper ending surface of the rotary shaft. The first seal ring is disposed above the second seal ring in such a way that the sliding surfaces of the first seal ring and of the second seal ring are in mutual contact. The sliding surfaces of the first seal ring and of the second seal ring have a mean diameter that is lower than an external diameter of the rotary shaft.

A sealing device for a sleeve of washing machines, provided internally with bearing units. The device is provided with a stationary first annular screen which integrally carries a first elastomeric element, a second annular rotating screen which integrally carries a second elastomeric element. The first and the second elastomeric elements face each other defining a first annular meatus (M), and a plurality of pairs of annular sealing lips (L1, L2) arranged inside the first annular meatus (M). The first sealing lip (L1) and the second sealing lip (L2) of the plurality of pairs of annular sealing lips (L1, L2) are substantially radially and axially superimposed and have predetermined axial dimensions to be radially and axially separated from each other and to define, inside the first annular meatus (M) and with the first and second sealing lips of the other pairs of annular sealing lips (L1, L2), a tortuous labyrinth (L).

A sealing device for a sleeve of washing machines, provided internally with bearing units. The device is provided with a stationary first annular screen which integrally carries a first elastomeric element, a second annular rotating screen which integrally carries a second elastomeric element. The first and the second elastomeric elements face each other defining a first annular meatus (M), and a plurality of pairs of annular sealing lips (L1, L2) arranged inside the first annular meatus (M). The first sealing lip (L1) and the second sealing lip (L2) of the plurality of pairs of annular sealing lips (L1, L2) are substantially radially and axially superimposed and have predetermined axial dimensions to be radially and axially separated from each other and to define, inside the first annular meatus (M) and with the first and second sealing lips of the other pairs of annular sealing lips (L1, L2), a tortuous labyrinth (L).