A sealing device includes an elastic body configured to seal an annular gap between an inner member and an outer member in order to prevent a leak of an object through the annular gap. The elastic body includes an annular main body portion including a first end portion and a second end portion opposite to each other and being to be disposed in the annular gap with the first end portion being closer to the object than the second end portion, a seal lip portion extending from the first end portion and being to be in contact with the inner member, a flange portion extending outwardly from the second end portion and including a first side and a second side opposite to each other, a side lip portion extending from the second end portion in a direction away from the first end portion, and a projecting portion extending from the second side and circumferentially about the annular main body. The first side is to be closer to the object than the second side and to be in contact with the outer member. The projecting portion is located such that the projecting portion is not to be in contact with the side lip portion with a distal end portion of the side lip portion being tilted radially outwardly in response to a front surface of the side lip portion being pressed by a member.

A sealing device includes an elastic body configured to seal an annular gap between an inner member and an outer member in order to prevent a leak of an object through the annular gap. The elastic body includes an annular main body portion including a first end portion and a second end portion opposite to each other and being to be disposed in the annular gap with the first end portion being closer to the object than the second end portion, a seal lip portion extending from the first end portion and being to be in contact with the inner member, a flange portion extending outwardly from the second end portion and including a first side and a second side opposite to each other, a side lip portion extending from the second end portion in a direction away from the first end portion, and a projecting portion extending from the second side and circumferentially about the annular main body. The first side is to be closer to the object than the second side and to be in contact with the outer member. The projecting portion is located such that the projecting portion is not to be in contact with the side lip portion with a distal end portion of the side lip portion being tilted radially outwardly in response to a front surface of the side lip portion being pressed by a member.

A valve apparatus, in particular a ball valve apparatus, is provided. The apparatus includes a housing device having at least one fluid port, a closure body, wherein the closure body includes an axis of rotation about which the closure body can be rotated in a direction of rotation in order to release and close the fluid port, wherein the fluid port includes a seal for sealing abutment against the closure body. The seal includes a first and a second sealing lip, wherein the sealing lips are configured such that, during operation, only one seal sealingly abuts against the closure body.

A piston for a fluid-actuated working cylinder, with a piston base unit which is coaxial to a piston longitudinal axis, consisting of a rigid core body which has radial outer peripheral surface and of an annular filling body which is seated in an annular receiving groove. The receiving groove is coaxial to the piston longitudinal axis and in the region of the radial outer peripheral surface is designed with a radially outwardly facing groove opening in the core body. The piston further includes a ring element which consists of plastic. The ring element radially outwardly coaxially encompasses the piston base unit at least in the region of the filling body, being radially supported with a radial inner peripheral surface on the piston base unit, projecting radially beyond the radial outer peripheral surface of the core body and comprising an axially orientated axial support surface radially outside the piston base unit on its two axial face sides. The piston further includes an annular enveloping body which has rubber elastic characteristics.

A sealing assembly for bearings, in particular for use in agriculture, comprising a primary sealing barrier and a secondary sealing barrier, which are arranged in series along a potential path (P) of ingress of contaminants into the bearing, and have, respectively, a first seal and a second seal with a plurality of contact lips. The contact lips of the first and second seal with a plurality of contact lips may be static lips that do not rotate about an axis (A) of rotation of the bearing.

A sealing assembly for bearings, in particular for use in agriculture, comprising a primary sealing barrier and a secondary sealing barrier, which are arranged in series along a potential path (P) of ingress of contaminants into the bearing, and have, respectively, a first seal and a second seal with a plurality of contact lips. The contact lips of the first and second seal with a plurality of contact lips may be static lips that do not rotate about an axis (A) of rotation of the bearing.

A seal assembly for a rotatable shaft assembly includes a seal housing and each of a main seal and a dust seal extending circumferentially around a seal housing center axis. The dust seal includes a radially inward dust seal lip, and is formed by a sealing layer having a plurality of ventilation openings formed therein, and a debris-blocking filter layer attached to the sealing layer and positioned across the ventilation openings. The main seal and dust seal assist in maintaining lubricating oil within a seal cavity. The dust seal prevents entry of debris whilst ventilating the seal cavity to limit carbonization of oil on seal assembly components. In an implementation the seal assembly is part of a rotatable crankshaft assembly.

A rotary seal seals a high-pressure region from a low-pressure region and has an assembly sleeve made of a rubber elastic material and at least one pressure-activatable rotary seal element with a seal edge. When a specified differential pressure value is exceeded, the seal edge of the rotary seal element rests sealingly against the seal surface of a machine part, thereby directly displacing a support element elastically supported on the rubber elastic assembly sleeve. When the specified differential pressure value is undershot, the support element is moved rearwards axially in the direction of the high-pressure region such that the seal edge of the rotary seal element is moved backwards into the seal edge rest position in which the rotary seal element lies against the seal surface without contact surface pressure or substantially without contact surface pressure or is arranged at a distance from the seal surface.

A rotary seal seals a high-pressure region from a low-pressure region and has an assembly sleeve made of a rubber elastic material and at least one pressure-activatable rotary seal element with a seal edge. When a specified differential pressure value is exceeded, the seal edge of the rotary seal element rests sealingly against the seal surface of a machine part, thereby directly displacing a support element elastically supported on the rubber elastic assembly sleeve. When the specified differential pressure value is undershot, the support element is moved rearwards axially in the direction of the high-pressure region such that the seal edge of the rotary seal element is moved backwards into the seal edge rest position in which the rotary seal element lies against the seal surface without contact surface pressure or substantially without contact surface pressure or is arranged at a distance from the seal surface.

The invention relates to a shaft seal (1) which is configured to seal a shaft (2) between a coolant side (8) and a dry side (9) in a water pump. The shaft seal (1) is particularly characterized in that a compressible volume compensator (7) for compensating a temperature-dependent volume fluctuation is provided, which is vertically disposed and interacting with the volume of a barrier fluid (6).