Torsional vibration damper

A torsional vibration damper for damping torsional vibrations, comprising:

• a hub part that is able to be fastened to a driveshaft of a motor;
• an inertia ring that surrounds the hub part in a radially outer region;
• and
• a fluid-filled gap and sealing devices, by which an escape of fluid is intended to be avoided, provided between the hub part and inertia ring, wherein
• each of the sealing devices has a first ring, tightly connected to the hub part, and a second ring, tightly connected to the inertia ring, and an annular sealing element comprising a circular ring element made of an elastomer with a central circular through hole, which is connected sealingly to the first ring and to the second ring,
• the sealing element of each sealing device has fastening portions that are vulcanized onto a respective external axial side of the first and the second ring, wherein the fastening portions comprise a first fastening section and a second fastening section, wherein the first fastening section is connected to the first ring, and the second fastening section is connected to the second ring, and wherein the second fastening section comprises an axial projection that protrudes outwardly and has a rectangular cross section with rounded edges,
• wherein a sealing portion of the respective annular sealing element extends obliquely at an angle to an axial direction of an axis of rotation of the torsional vibration damper and has an angular value of between 15° and 50°, and
• wherein the sealing element of each sealing device comprising two annular ring sections arranged in different axial planes relative to one another, each of which has a circular opening arranged coaxially, wherein the two annular ring sections are connected to one another via a connection section.

A torsional vibration damper for damping torsional vibrations, comprising:

• a hub part that is able to be fastened to a driveshaft of a motor;
• an inertia ring that surrounds the hub part in a radially outer region;
• and
• a fluid-filled gap and sealing devices, by which an escape of fluid is intended to be avoided, provided between the hub part and inertia ring, wherein
• each of the sealing devices has a first ring, tightly connected to the hub part, and a second ring, tightly connected to the inertia ring, and an annular sealing element comprising a circular ring element made of an elastomer with a central circular through hole, which is connected sealingly to the first ring and to the second ring, and
• the sealing element of each sealing device has fastening portions that are vulcanized onto a respective external axial side of the first and the second ring, wherein the fastening portions comprise a first fastening section and a second fastening section, wherein the first fastening section is connected to the first ring, and the second fastening section is connected to the second ring, and wherein the second fastening section comprises an axial projection that protrudes outwardly and has a rectangular cross section with rounded edges;
• wherein the sealing element made of elastomer between the respective first and second rings of the at least one sealing device is made of a high-temperature-resistant elastomer,
• wherein the high-temperature-resistant elastomer is a silicone material;
• wherein the sealing element is made of an inorganically filled silicone elastomer, wherein a content of the inorganic material by percentage is at least 30%;
• and
• wherein the sealing element of each sealing device comprising two annular ring sections arranged in different axial planes relative to one another, each of which has a circular opening arranged coaxially, wherein the two annular ring sections are connected to one another via a connection section.