Elastic sealing element in the form of bellows

An elastic sealing element in combination with two components movable in relation to one another, the combination comprising:

• a first element;
• a second element movable relative to the fist component;
• a first low-elasticity contact zone in contact with the first component;
• a second low-elasticity contact zone in contact with the second component;
• a deformation zone located between said first contact zone and said second contact zone and defining a chamber for accommodating lubricants on an inner side facing the first component and second component, said deformation zone having an elasticity higher than that of said first contact zone and said second contact zone, said deformation zone having an outer surface;
• and
• an overpressure relief means arranged in an area of one of said first contact zone and said second contact zone, said overpressure means having at least one relief opening connecting said lubricant chamber to the outside of said sealing element and extending at an oblique angle with respect to said outer surface and a closing element closing said relief opening, wherein said dosing element is made in one piece with said sealing element and closes said relief opening up to an overpressure limit in said lubricant chamber due to an intrinsic elasticity of the material of the sealing element.

An elastic sealing element in combination with two components movable in relation to one another, the combination comprising:

• a first element;
• a second element movable relative to the first component;
• a first low-elasticity contact zone in contact with the first component;
• a second low-elasticity contact zone in contact with the second component;
• a deformation zone located between said first contact zone and said second contact zone and defining a chamber for accommodating lubricants on an inner side facing the first component and second component, sad deformation zone having an elasticity higher than that of said first contact zone and said second contact zone, said deformation zone having an outer surface;
• and
• an overpressure relief means arranged in an area of one of said first contact zone and said second contact zone, said overpressure means having at least one relief opening connecting said lubricant chamber to the outside of said sealing element and a closing element closing said relief opening, wherein said closing element is made in one piece with said sealing element and closes said relief opening up to an overpressure limit in said lubricant chamber due to an intrinsic elasticity ofthe material ofthe sealing element, said relief opening comprising a circular slot, wherein the depth of said slot is essentially half the wall thickness of the sealing element in said area in which said overpressure relief device is arranged, and said lubricant chamber is provided in communication with said slot by a hole.

An elastic sealing element in the form of bellows for sealing the contact surface between at least two components movable in relation to one another, the sealing element comprising;

• low-elasticity contact zones with contact surfaces for contact with the movable components;
• a deformation zone of an elasticity higher than that of said contact zones, said deformation zone being located between the contact zones and defining a chamber space for accommodating lubricants on an inner side facing the movable components;
• and
• an overpressure relief device arranged in an area of one of said low-elasticity contact zones and having at least one relief opening connecting said lubricant chamber to the outside of said sealing element and a closing element closing said relief opening, wherein said closing element is made in one piece with said sealing element and closes said relief opening up to an overpressure limit in said lubricant chamber due to an intrinsic elasticity of the material of the sealing element, said relief opening including a circular slot, wherein the depth of said slot is essentially half the wall thickness ofthe sealing element in said area in which said overpressure relief device is arranged, and said lubricant chamber is provided in communication with said slot by a hole and further comprising additional holes which connect said lubricant chamber with said slot, said additional holes being arranged on at least one concentric radius.